45131864 has 16 divisors (see below), whose sum is σ = 84715200. Its totient is φ = 22541152.

The previous prime is 45131839. The next prime is 45131893. The reversal of 45131864 is 46813154.

45131864 = 1672² + 1673² + ... + 1687².

It is a super-2 number, since 2×45131864² = 4073770296228992, 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 45131864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6329 + ... + 11415.

It is an arithmetic number, because the mean of its divisors is an integer number (5294700).

Almost surely, 2^45131864 is an apocalyptic number.

It is an amenable number.

45131864 is a deficient number, since it is larger than the sum of its proper divisors (39583336).

45131864 is a wasteful number, since it uses less digits than its factorization.

45131864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6202 (or 6198 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 45131864 is about 6718.0253051027. The cubic root of 45131864 is about 356.0364184432.

The spelling of 45131864 in words is "forty-five million, one hundred thirty-one thousand, eight hundred sixty-four".