55425568 has 48 divisors (see below), whose sum is σ = 120294720. Its totient is φ = 24928000.

The previous prime is 55425541. The next prime is 55425599. The reversal of 55425568 is 86552455.

It is a self number, because there is not a number n which added to its sum of digits gives 55425568.

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, 34773 + ... + 36331.

It is an arithmetic number, because the mean of its divisors is an integer number (2506140).

Almost surely, 2^55425568 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 55425568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60147360).

55425568 is an abundant number, since it is smaller than the sum of its proper divisors (64869152).

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

55425568 is a wasteful number, since it uses less digits than its factorization.

55425568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681 (or 1673 counting only the distinct ones).

The product of its digits is 240000, while the sum is 40.

The square root of 55425568 is about 7444.8349880975. The cubic root of 55425568 is about 381.2735845663.

The spelling of 55425568 in words is "fifty-five million, four hundred twenty-five thousand, five hundred sixty-eight".