57724913 has 2 divisors, whose sum is σ = 57724914. Its totient is φ = 57724912.

The previous prime is 57724879. The next prime is 57724939. The reversal of 57724913 is 31942775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50013184 + 7711729 = 7072^2 + 2777^2 .

It is a cyclic number.

It is not a de Polignac number, because 57724913 - 2¹⁶ = 57659377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57724943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28862456 + 28862457.

It is an arithmetic number, because the mean of its divisors is an integer number (28862457).

Almost surely, 2^57724913 is an apocalyptic number.

It is an amenable number.

57724913 is a deficient number, since it is larger than the sum of its proper divisors (1).

57724913 is an equidigital number, since it uses as much as digits as its factorization.

57724913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 57724913 is about 7597.6912940709. The cubic root of 57724913 is about 386.4747239810.

The spelling of 57724913 in words is "fifty-seven million, seven hundred twenty-four thousand, nine hundred thirteen".