55999376 has 20 divisors (see below), whose sum is σ = 110547612. Its totient is φ = 27470976.

The previous prime is 55999369. The next prime is 55999379. The reversal of 55999376 is 67399955.

It can be written as a sum of positive squares in 2 ways, for example, as 46240000 + 9759376 = 6800^2 + 3124^2 .

It is a super-2 number, since 2×55999376² = 6271860224778752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is not an unprimeable number, because it can be changed into a prime (55999379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32171 + ... + 33866.

Almost surely, 2^55999376 is an apocalyptic number.

It is an amenable number.

55999376 is a deficient number, since it is larger than the sum of its proper divisors (54548236).

55999376 is a wasteful number, since it uses less digits than its factorization.

55999376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66098 (or 66092 counting only the distinct ones).

The product of its digits is 2296350, while the sum is 53.

The square root of 55999376 is about 7483.2730806780. The cubic root of 55999376 is about 382.5848155146.

The spelling of 55999376 in words is "fifty-five million, nine hundred ninety-nine thousand, three hundred seventy-six".