55025568 has 240 divisors, whose sum is σ = 184415616. Its totient is φ = 15966720.

The previous prime is 55025563. The next prime is 55025603. The reversal of 55025568 is 86552055.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55025561) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 774973 + ... + 775043.

Almost surely, 2^55025568 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 55025568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92207808).

55025568 is an abundant number, since it is smaller than the sum of its proper divisors (129390048).

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

55025568 is a wasteful number, since it uses less digits than its factorization.

55025568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 55025568 is about 7417.9220810143. The cubic root of 55025568 is about 380.3541665763.

The spelling of 55025568 in words is "fifty-five million, twenty-five thousand, five hundred sixty-eight".