55879816 has 24 divisors (see below), whose sum is σ = 111111210. Its totient is φ = 26255360.

The previous prime is 55879801. The next prime is 55879849. The reversal of 55879816 is 61897855.

It can be written as a sum of positive squares in 3 ways, for example, as 53144100 + 2735716 = 7290^2 + 1654^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55879816.

It is a congruent number.

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, 86856 + ... + 87496.

Almost surely, 2^55879816 is an apocalyptic number.

It is an amenable number.

55879816 is a deficient number, since it is larger than the sum of its proper divisors (55231394).

55879816 is an equidigital number, since it uses as much as digits as its factorization.

55879816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 660 counting only the distinct ones).

The product of its digits is 604800, while the sum is 49.

The square root of 55879816 is about 7475.2803291917. The cubic root of 55879816 is about 382.3123456183.

The spelling of 55879816 in words is "fifty-five million, eight hundred seventy-nine thousand, eight hundred sixteen".