45531900 has 54 divisors (see below), whose sum is σ = 142720032. Its totient is φ = 12141600.

The previous prime is 45531877. The next prime is 45531947. The reversal of 45531900 is 913554.

45531900 is a `hidden beast` number, since 45 + 531 + 90 + 0 = 666.

It is a super-2 number, since 2×45531900² = 4146307835220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24396 + ... + 26195.

Almost surely, 2^45531900 is an apocalyptic number.

It is an amenable number.

45531900 is an abundant number, since it is smaller than the sum of its proper divisors (97188132).

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

45531900 is a wasteful number, since it uses less digits than its factorization.

45531900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50611 (or 50601 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 45531900 is about 6747.7329526293. The cubic root of 45531900 is about 357.0852608072.

It can be divided in two parts, 4 and 5531900, that added together give a square (5531904 = 2352²).

The spelling of 45531900 in words is "forty-five million, five hundred thirty-one thousand, nine hundred".