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52481960 = 23561137157
BaseRepresentation
bin1100100000110…
…0111110101000
310122202100201022
43020030332220
5101413410320
65112512012
71205042426
oct310147650
9118670638
1052481960
1127696523
12156ab608
13ab4701b
146d82116
15491a325
hex320cfa8

52481960 has 64 divisors (see below), whose sum is σ = 121666320. Its totient is φ = 20367360.

The previous prime is 52481959. The next prime is 52481969. The reversal of 52481960 is 6918425.

It can be written as a sum of positive squares in 8 ways, for example, as 6160324 + 46321636 = 2482^2 + 6806^2 .

It is a super-2 number, since 2×524819602 = 5508712250883200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52481960.

It is not an unprimeable number, because it can be changed into a prime (52481969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334202 + ... + 334358.

Almost surely, 252481960 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 52481960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60833160).

52481960 is an abundant number, since it is smaller than the sum of its proper divisors (69184360).

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

52481960 is a wasteful number, since it uses less digits than its factorization.

52481960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 52481960 is about 7244.4433878663. The cubic root of 52481960 is about 374.4007257942.

The spelling of 52481960 in words is "fifty-two million, four hundred eighty-one thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 61 122 137 157 244 274 305 314 488 548 610 628 685 785 1096 1220 1256 1370 1570 2440 2740 3140 5480 6280 8357 9577 16714 19154 21509 33428 38308 41785 43018 47885 66856 76616 83570 86036 95770 107545 167140 172072 191540 215090 334280 383080 430180 860360 1312049 2624098 5248196 6560245 10496392 13120490 26240980 52481960