55431892 has 12 divisors (see below), whose sum is σ = 102111520. Its totient is φ = 26257176.

The previous prime is 55431889. The next prime is 55431907. The reversal of 55431892 is 29813455.

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, 364608 + ... + 364759.

Almost surely, 2^55431892 is an apocalyptic number.

It is an amenable number.

55431892 is a deficient number, since it is larger than the sum of its proper divisors (46679628).

55431892 is a wasteful number, since it uses less digits than its factorization.

55431892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729390 (or 729388 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 55431892 is about 7445.2596999702. The cubic root of 55431892 is about 381.2880849887.

The spelling of 55431892 in words is "fifty-five million, four hundred thirty-one thousand, eight hundred ninety-two".