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54905020 = 2252745251
BaseRepresentation
bin1101000101110…
…0100010111100
310211022110112021
43101130202330
5103023430040
65240445524
71234453642
oct321344274
9124273467
1054905020
1128aa0a55
12164798a4
13b4b4ba1
147413192
154c4824a
hex345c8bc

54905020 has 12 divisors (see below), whose sum is σ = 115300584. Its totient is φ = 21962000.

The previous prime is 54905009. The next prime is 54905047. The reversal of 54905020 is 2050945.

54905020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×549050202 = 6029122442400800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1372606 + ... + 1372645.

It is an arithmetic number, because the mean of its divisors is an integer number (9608382).

Almost surely, 254905020 is an apocalyptic number.

It is an amenable number.

54905020 is an abundant number, since it is smaller than the sum of its proper divisors (60395564).

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

54905020 is a wasteful number, since it uses less digits than its factorization.

54905020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745260 (or 2745258 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 54905020 is about 7409.7921698250. The cubic root of 54905020 is about 380.0762081690.

Adding to 54905020 its reverse (2050945), we get a palindrome (56955965).

The spelling of 54905020 in words is "fifty-four million, nine hundred five thousand, twenty".

Divisors: 1 2 4 5 10 20 2745251 5490502 10981004 13726255 27452510 54905020