57381371 has 2 divisors, whose sum is σ = 57381372. Its totient is φ = 57381370.

The previous prime is 57381353. The next prime is 57381397. The reversal of 57381371 is 17318375.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57381371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57381671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28690685 + 28690686.

It is an arithmetic number, because the mean of its divisors is an integer number (28690686).

Almost surely, 2^57381371 is an apocalyptic number.

57381371 is a deficient number, since it is larger than the sum of its proper divisors (1).

57381371 is an equidigital number, since it uses as much as digits as its factorization.

57381371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 35.

The square root of 57381371 is about 7575.0492407640. The cubic root of 57381371 is about 385.7065140050.

The spelling of 57381371 in words is "fifty-seven million, three hundred eighty-one thousand, three hundred seventy-one".