57447957 has 32 divisors (see below), whose sum is σ = 90528768. Its totient is φ = 31723776.

The previous prime is 57447911. The next prime is 57447961. The reversal of 57447957 is 75974475.

It is a happy number.

57447957 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 57447957 - 2⁸ = 57447701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57447757) 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 31 ways as a sum of consecutive naturals, for example, 101758 + ... + 102320.

It is an arithmetic number, because the mean of its divisors is an integer number (2829024).

Almost surely, 2^57447957 is an apocalyptic number.

It is an amenable number.

57447957 is a deficient number, since it is larger than the sum of its proper divisors (33080811).

57447957 is a wasteful number, since it uses less digits than its factorization.

57447957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729.

The product of its digits is 1234800, while the sum is 48.

The square root of 57447957 is about 7579.4430534176. The cubic root of 57447957 is about 385.8556490858.

The spelling of 57447957 in words is "fifty-seven million, four hundred forty-seven thousand, nine hundred fifty-seven".