55258992 has 90 divisors (see below), whose sum is σ = 163369752. Its totient is φ = 17433792.

The previous prime is 55258991. The next prime is 55258997. The reversal of 55258992 is 29985255.

55258992 is a `hidden beast` number, since 552 + 5 + 8 + 9 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55258991) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 51453 + ... + 52515.

Almost surely, 2^55258992 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 55258992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81684876).

55258992 is an abundant number, since it is smaller than the sum of its proper divisors (108110760).

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

55258992 is a wasteful number, since it uses less digits than its factorization.

55258992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1087 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The square root of 55258992 is about 7433.6392164269. The cubic root of 55258992 is about 380.8912414064.

The spelling of 55258992 in words is "fifty-five million, two hundred fifty-eight thousand, nine hundred ninety-two".