57149371 has 2 divisors, whose sum is σ = 57149372. Its totient is φ = 57149370.

The previous prime is 57149369. The next prime is 57149381. The reversal of 57149371 is 17394175.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57149371 - 2¹ = 57149369 is a prime.

Together with 57149369, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57149371.

It is not a weakly prime, because it can be changed into another prime (57149381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28574685 + 28574686.

It is an arithmetic number, because the mean of its divisors is an integer number (28574686).

Almost surely, 2^57149371 is an apocalyptic number.

57149371 is a deficient number, since it is larger than the sum of its proper divisors (1).

57149371 is an equidigital number, since it uses as much as digits as its factorization.

57149371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 37.

The square root of 57149371 is about 7559.7202990587. The cubic root of 57149371 is about 385.1859921034.

The spelling of 57149371 in words is "fifty-seven million, one hundred forty-nine thousand, three hundred seventy-one".