55372587 has 8 divisors (see below), whose sum is σ = 78173136. Its totient is φ = 34743552.

The previous prime is 55372579. The next prime is 55372589. The reversal of 55372587 is 78527355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55372587 - 2³ = 55372579 is a prime.

It is a super-2 number, since 2×55372587² = 6132246782145138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (55372589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542818 + ... + 542919.

It is an arithmetic number, because the mean of its divisors is an integer number (9771642).

Almost surely, 2^55372587 is an apocalyptic number.

55372587 is a deficient number, since it is larger than the sum of its proper divisors (22800549).

55372587 is a wasteful number, since it uses less digits than its factorization.

55372587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085757.

The product of its digits is 294000, while the sum is 42.

The square root of 55372587 is about 7441.2758986615. The cubic root of 55372587 is about 381.1520600523.

The spelling of 55372587 in words is "fifty-five million, three hundred seventy-two thousand, five hundred eighty-seven".