55458568 has 64 divisors (see below), whose sum is σ = 122472000. Its totient is φ = 23270400.

The previous prime is 55458551. The next prime is 55458619. The reversal of 55458568 is 86585455.

It is a happy number.

It is a super-2 number, since 2×55458568² = 6151305529221248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68148 + ... + 68956.

It is an arithmetic number, because the mean of its divisors is an integer number (1913625).

Almost surely, 2^55458568 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 55458568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61236000).

55458568 is an abundant number, since it is smaller than the sum of its proper divisors (67013432).

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

55458568 is a wasteful number, since it uses less digits than its factorization.

55458568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 882 counting only the distinct ones).

The product of its digits is 960000, while the sum is 46.

The square root of 55458568 is about 7447.0509599438. The cubic root of 55458568 is about 381.3492387724.

The spelling of 55458568 in words is "fifty-five million, four hundred fifty-eight thousand, five hundred sixty-eight".