57230861 has 2 divisors, whose sum is σ = 57230862. Its totient is φ = 57230860.

The previous prime is 57230821. The next prime is 57230911. The reversal of 57230861 is 16803275.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45630025 + 11600836 = 6755^2 + 3406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57230861 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57230821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28615430 + 28615431.

It is an arithmetic number, because the mean of its divisors is an integer number (28615431).

Almost surely, 2^57230861 is an apocalyptic number.

It is an amenable number.

57230861 is a deficient number, since it is larger than the sum of its proper divisors (1).

57230861 is an equidigital number, since it uses as much as digits as its factorization.

57230861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 57230861 is about 7565.1081287712. The cubic root of 57230861 is about 385.3689856548.

The spelling of 57230861 in words is "fifty-seven million, two hundred thirty thousand, eight hundred sixty-one".