57724973 has 2 divisors, whose sum is σ = 57724974. Its totient is φ = 57724972.

The previous prime is 57724967. The next prime is 57724981. The reversal of 57724973 is 37942775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44049769 + 13675204 = 6637^2 + 3698^2 .

It is a cyclic number.

It is not a de Polignac number, because 57724973 - 2⁴ = 57724957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57724913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28862486 + 28862487.

It is an arithmetic number, because the mean of its divisors is an integer number (28862487).

Almost surely, 2^57724973 is an apocalyptic number.

It is an amenable number.

57724973 is a deficient number, since it is larger than the sum of its proper divisors (1).

57724973 is an equidigital number, since it uses as much as digits as its factorization.

57724973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370440, while the sum is 44.

The square root of 57724973 is about 7597.6952426377. The cubic root of 57724973 is about 386.4748578832.

The spelling of 57724973 in words is "fifty-seven million, seven hundred twenty-four thousand, nine hundred seventy-three".