57157347 has 32 divisors (see below), whose sum is σ = 85942080. Its totient is φ = 33546240.

The previous prime is 57157333. The next prime is 57157351. The reversal of 57157347 is 74375175.

57157347 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 57157347 - 2⁶ = 57157283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (57157307) 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, 109447 + ... + 109967.

It is an arithmetic number, because the mean of its divisors is an integer number (2685690).

Almost surely, 2^57157347 is an apocalyptic number.

57157347 is a deficient number, since it is larger than the sum of its proper divisors (28784733).

57157347 is a wasteful number, since it uses less digits than its factorization.

57157347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663.

The product of its digits is 102900, while the sum is 39.

The square root of 57157347 is about 7560.2478133987. The cubic root of 57157347 is about 385.2039106474.

The spelling of 57157347 in words is "fifty-seven million, one hundred fifty-seven thousand, three hundred forty-seven".