55657724 has 6 divisors (see below), whose sum is σ = 97401024. Its totient is φ = 27828860.

The previous prime is 55657717. The next prime is 55657739. The reversal of 55657724 is 42775655.

55657724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 as a sum of consecutive naturals, namely, 6957212 + ... + 6957219.

It is an arithmetic number, because the mean of its divisors is an integer number (16233504).

Almost surely, 2^55657724 is an apocalyptic number.

It is an amenable number.

55657724 is a deficient number, since it is larger than the sum of its proper divisors (41743300).

55657724 is a wasteful number, since it uses less digits than its factorization.

55657724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13914435 (or 13914433 counting only the distinct ones).

The product of its digits is 294000, while the sum is 41.

The square root of 55657724 is about 7460.4104444729. The cubic root of 55657724 is about 381.8051782901.

The spelling of 55657724 in words is "fifty-five million, six hundred fifty-seven thousand, seven hundred twenty-four".