55977812 has 12 divisors (see below), whose sum is σ = 106866816. Its totient is φ = 25444440.

The previous prime is 55977767. The next prime is 55977829. The reversal of 55977812 is 21877955.

55977812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 1272223 = 55977812 / (5 + 5 + 9 + 7 + 7 + 8 + 1 + 2).

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 3 ways as a sum of consecutive naturals, for example, 636068 + ... + 636155.

It is an arithmetic number, because the mean of its divisors is an integer number (8905568).

Almost surely, 2^55977812 is an apocalyptic number.

It is an amenable number.

55977812 is a deficient number, since it is larger than the sum of its proper divisors (50889004).

55977812 is a wasteful number, since it uses less digits than its factorization.

55977812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272238 (or 1272236 counting only the distinct ones).

The product of its digits is 176400, while the sum is 44.

The square root of 55977812 is about 7481.8321285632. The cubic root of 55977812 is about 382.5357011688.

The spelling of 55977812 in words is "fifty-five million, nine hundred seventy-seven thousand, eight hundred twelve".