55889288 has 32 divisors (see below), whose sum is σ = 128976960. Its totient is φ = 22109760.

The previous prime is 55889269. The next prime is 55889291. The reversal of 55889288 is 88298855.

It is a happy number.

It is a super-2 number, since 2×55889288² = 6247225026293888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37658 + ... + 39113.

It is an arithmetic number, because the mean of its divisors is an integer number (4030530).

Almost surely, 2^55889288 is an apocalyptic number.

It is an amenable number.

55889288 is an abundant number, since it is smaller than the sum of its proper divisors (73087672).

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

55889288 is a wasteful number, since it uses less digits than its factorization.

55889288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76797 (or 76793 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 53.

The square root of 55889288 is about 7475.9138571816. The cubic root of 55889288 is about 382.3339458919. Note that the first 3 decimals are identical.

The spelling of 55889288 in words is "fifty-five million, eight hundred eighty-nine thousand, two hundred eighty-eight".