55215862 has 16 divisors (see below), whose sum is σ = 93890160. Its totient is φ = 24142752.

The previous prime is 55215859. The next prime is 55215899. The reversal of 55215862 is 26851255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55393 + ... + 56380.

It is an arithmetic number, because the mean of its divisors is an integer number (5868135).

Almost surely, 2^55215862 is an apocalyptic number.

55215862 is a deficient number, since it is larger than the sum of its proper divisors (38674298).

55215862 is a wasteful number, since it uses less digits than its factorization.

55215862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111807.

The product of its digits is 24000, while the sum is 34.

The square root of 55215862 is about 7430.7376484438. The cubic root of 55215862 is about 380.7921195892.

The spelling of 55215862 in words is "fifty-five million, two hundred fifteen thousand, eight hundred sixty-two".