55805868 has 24 divisors (see below), whose sum is σ = 144682160. Its totient is φ = 18601920.

The previous prime is 55805861. The next prime is 55805887. The reversal of 55805868 is 86850855.

55805868 is a `hidden beast` number, since 5 + 580 + 5 + 8 + 68 = 666.

It is a super-2 number, since 2×55805868² = 6228589806466848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55805861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258253 + ... + 258468.

Almost surely, 2^55805868 is an apocalyptic number.

It is an amenable number.

55805868 is an abundant number, since it is smaller than the sum of its proper divisors (88876292).

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

55805868 is a wasteful number, since it uses less digits than its factorization.

55805868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516734 (or 516726 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The square root of 55805868 is about 7470.3325227195. The cubic root of 55805868 is about 382.1436280899.

The spelling of 55805868 in words is "fifty-five million, eight hundred five thousand, eight hundred sixty-eight".