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54880540 = 225111331619
BaseRepresentation
bin1101000101011…
…0100100011100
310211021012221121
43101112210130
5103022134130
65240140324
71234322401
oct321264434
9124235847
1054880540
1128a84620
12164676a4
13b4a69c0
1474082a8
154c40d7a
hex345691c

54880540 has 96 divisors (see below), whose sum is σ = 139991040. Its totient is φ = 17798400.

The previous prime is 54880489. The next prime is 54880549. The reversal of 54880540 is 4508845.

It is a junction number, because it is equal to n+sod(n) for n = 54880496 and 54880505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54880549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88351 + ... + 88969.

It is an arithmetic number, because the mean of its divisors is an integer number (1458240).

Almost surely, 254880540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54880540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69995520).

54880540 is an abundant number, since it is smaller than the sum of its proper divisors (85110500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54880540 is a wasteful number, since it uses less digits than its factorization.

54880540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 54880540 is about 7408.1401174654. The cubic root of 54880540 is about 380.0197127355.

It can be divided in two parts, 548805 and 40, that added together give a palindrome (548845).

The spelling of 54880540 in words is "fifty-four million, eight hundred eighty thousand, five hundred forty".

Divisors: 1 2 4 5 10 11 13 20 22 26 31 44 52 55 62 65 110 124 130 143 155 220 260 286 310 341 403 572 619 620 682 715 806 1238 1364 1430 1612 1705 2015 2476 2860 3095 3410 4030 4433 6190 6809 6820 8047 8060 8866 12380 13618 16094 17732 19189 22165 27236 32188 34045 38378 40235 44330 68090 76756 80470 88517 88660 95945 136180 160940 177034 191890 211079 249457 354068 383780 422158 442585 498914 844316 885170 997828 1055395 1247285 1770340 2110790 2494570 2744027 4221580 4989140 5488054 10976108 13720135 27440270 54880540