57157133 has 8 divisors (see below), whose sum is σ = 62870016. Its totient is φ = 51959820.

The previous prime is 57157127. The next prime is 57157169. The reversal of 57157133 is 33175175.

It is not a de Polignac number, because 57157133 - 2⁴ = 57157117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57157133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57157033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20141 + ... + 22802.

It is an arithmetic number, because the mean of its divisors is an integer number (7858752).

Almost surely, 2^57157133 is an apocalyptic number.

It is an amenable number.

57157133 is a deficient number, since it is larger than the sum of its proper divisors (5712883).

57157133 is an equidigital number, since it uses as much as digits as its factorization.

57157133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42976 (or 42954 counting only the distinct ones).

The product of its digits is 11025, while the sum is 32.

The square root of 57157133 is about 7560.2336604102. The cubic root of 57157133 is about 385.2034299058.

The spelling of 57157133 in words is "fifty-seven million, one hundred fifty-seven thousand, one hundred thirty-three".