55572615 has 96 divisors (see below), whose sum is σ = 119070720. Its totient is φ = 24494400.

The previous prime is 55572581. The next prime is 55572619. The reversal of 55572615 is 51627555.

It is a happy number.

It is not a de Polignac number, because 55572615 - 2⁷ = 55572487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55572615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55572619) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 204930 + ... + 205200.

It is an arithmetic number, because the mean of its divisors is an integer number (1240320).

Almost surely, 2^55572615 is an apocalyptic number.

55572615 is an abundant number, since it is smaller than the sum of its proper divisors (63498105).

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

55572615 is a wasteful number, since it uses less digits than its factorization.

55572615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 317 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 55572615 is about 7454.7042194845. The cubic root of 55572615 is about 381.6104665655.

The spelling of 55572615 in words is "fifty-five million, five hundred seventy-two thousand, six hundred fifteen".