55939257 has 48 divisors (see below), whose sum is σ = 91690560. Its totient is φ = 32572800.

The previous prime is 55939253. The next prime is 55939271. The reversal of 55939257 is 75293955.

55939257 is a `hidden beast` number, since 5 + 593 + 9 + 2 + 57 = 666.

55939257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55939257 - 2² = 55939253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55939253) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 356223 + ... + 356379.

It is an arithmetic number, because the mean of its divisors is an integer number (1910220).

Almost surely, 2^55939257 is an apocalyptic number.

It is an amenable number.

55939257 is a deficient number, since it is larger than the sum of its proper divisors (35751303).

55939257 is a wasteful number, since it uses less digits than its factorization.

55939257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 291 counting only the distinct ones).

The product of its digits is 425250, while the sum is 45.

The square root of 55939257 is about 7479.2551099692. The cubic root of 55939257 is about 382.4478565342.

The spelling of 55939257 in words is "fifty-five million, nine hundred thirty-nine thousand, two hundred fifty-seven".