55908564 has 48 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 17581536.

The previous prime is 55908539. The next prime is 55908571. The reversal of 55908564 is 46580955.

It is a congruent number.

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, 86089 + ... + 86735.

It is an arithmetic number, because the mean of its divisors is an integer number (2872800).

Almost surely, 2^55908564 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 55908564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68947200).

55908564 is an abundant number, since it is smaller than the sum of its proper divisors (81985836).

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

55908564 is a wasteful number, since it uses less digits than its factorization.

55908564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 55908564 is about 7477.2029529765. The cubic root of 55908564 is about 382.3778960076.

The spelling of 55908564 in words is "fifty-five million, nine hundred eight thousand, five hundred sixty-four".