55520658 has 12 divisors (see below), whose sum is σ = 120294798. Its totient is φ = 18506880.

The previous prime is 55520639. The next prime is 55520669. The reversal of 55520658 is 85602555.

It can be written as a sum of positive squares in only one way, i.e., 41254929 + 14265729 = 6423^2 + 3777^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1542223 + ... + 1542258.

Almost surely, 2^55520658 is an apocalyptic number.

55520658 is an abundant number, since it is smaller than the sum of its proper divisors (64774140).

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

55520658 is a wasteful number, since it uses less digits than its factorization.

55520658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084489 (or 3084486 counting only the distinct ones).

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

The square root of 55520658 is about 7451.2185580615. The cubic root of 55520658 is about 381.4915019919.

The spelling of 55520658 in words is "fifty-five million, five hundred twenty thousand, six hundred fifty-eight".