55550565 has 96 divisors (see below), whose sum is σ = 116064000. Its totient is φ = 24554880.

The previous prime is 55550557. The next prime is 55550587. The reversal of 55550565 is 56505555.

55550565 is a `hidden beast` number, since 55 + 550 + 56 + 5 = 666.

It is not a de Polignac number, because 55550565 - 2³ = 55550557 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 910635 + ... + 910695.

It is an arithmetic number, because the mean of its divisors is an integer number (1209000).

Almost surely, 2^55550565 is an apocalyptic number.

It is an amenable number.

55550565 is an abundant number, since it is smaller than the sum of its proper divisors (60513435).

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

55550565 is a wasteful number, since it uses less digits than its factorization.

55550565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The square root of 55550565 is about 7453.2251408367. The cubic root of 55550565 is about 381.5599883223.

The spelling of 55550565 in words is "fifty-five million, five hundred fifty thousand, five hundred sixty-five".