57393877 has 2 divisors, whose sum is σ = 57393878. Its totient is φ = 57393876.

The previous prime is 57393839. The next prime is 57393907. The reversal of 57393877 is 77839375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52403121 + 4990756 = 7239^2 + 2234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57393877 is a prime.

It is a super-2 number, since 2×57393877² = 6588114234182258, which contains 22 as substring.

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 57393877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57393577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28696938 + 28696939.

It is an arithmetic number, because the mean of its divisors is an integer number (28696939).

Almost surely, 2^57393877 is an apocalyptic number.

It is an amenable number.

57393877 is a deficient number, since it is larger than the sum of its proper divisors (1).

57393877 is an equidigital number, since it uses as much as digits as its factorization.

57393877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1111320, while the sum is 49.

The square root of 57393877 is about 7575.8746689739. The cubic root of 57393877 is about 385.7345329433.

The spelling of 57393877 in words is "fifty-seven million, three hundred ninety-three thousand, eight hundred seventy-seven".