57724313 has 2 divisors, whose sum is σ = 57724314. Its totient is φ = 57724312.

The previous prime is 57724301. The next prime is 57724321. The reversal of 57724313 is 31342775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57638464 + 85849 = 7592^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 57724313 - 2¹² = 57720217 is a prime.

It is a super-2 number, since 2×57724313² = 6664192622643938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57724313.

It is not a weakly prime, because it can be changed into another prime (57724343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28862156 + 28862157.

It is an arithmetic number, because the mean of its divisors is an integer number (28862157).

Almost surely, 2^57724313 is an apocalyptic number.

It is an amenable number.

57724313 is a deficient number, since it is larger than the sum of its proper divisors (1).

57724313 is an equidigital number, since it uses as much as digits as its factorization.

57724313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 32.

The square root of 57724313 is about 7597.6518082892. The cubic root of 57724313 is about 386.4733849541.

The spelling of 57724313 in words is "fifty-seven million, seven hundred twenty-four thousand, three hundred thirteen".