55977684 has 48 divisors (see below), whose sum is σ = 149912448. Its totient is φ = 15925248.

The previous prime is 55977679. The next prime is 55977721. The reversal of 55977684 is 48677955.

55977684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55977684² = 6267002212007712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20292 + ... + 22884.

It is an arithmetic number, because the mean of its divisors is an integer number (3123176).

Almost surely, 2^55977684 is an apocalyptic number.

It is an amenable number.

55977684 is an abundant number, since it is smaller than the sum of its proper divisors (93934764).

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

55977684 is a wasteful number, since it uses less digits than its factorization.

55977684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864 (or 2862 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 51.

The square root of 55977684 is about 7481.8235745037. The cubic root of 55977684 is about 382.5354095973.

The spelling of 55977684 in words is "fifty-five million, nine hundred seventy-seven thousand, six hundred eighty-four".