57347791 has 2 divisors, whose sum is σ = 57347792. Its totient is φ = 57347790.

The previous prime is 57347777. The next prime is 57347813. The reversal of 57347791 is 19774375.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57347791 - 2⁷ = 57347663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57347711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28673895 + 28673896.

It is an arithmetic number, because the mean of its divisors is an integer number (28673896).

Almost surely, 2^57347791 is an apocalyptic number.

57347791 is a deficient number, since it is larger than the sum of its proper divisors (1).

57347791 is an equidigital number, since it uses as much as digits as its factorization.

57347791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185220, while the sum is 43.

The square root of 57347791 is about 7572.8324291509. The cubic root of 57347791 is about 385.6312598945.

The spelling of 57347791 in words is "fifty-seven million, three hundred forty-seven thousand, seven hundred ninety-one".