57406997 has 2 divisors, whose sum is σ = 57406998. Its totient is φ = 57406996.

The previous prime is 57406991. The next prime is 57407027. The reversal of 57406997 is 79960475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50822641 + 6584356 = 7129^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 57406997 - 2⁶ = 57406933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57406991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28703498 + 28703499.

It is an arithmetic number, because the mean of its divisors is an integer number (28703499).

Almost surely, 2^57406997 is an apocalyptic number.

It is an amenable number.

57406997 is a deficient number, since it is larger than the sum of its proper divisors (1).

57406997 is an equidigital number, since it uses as much as digits as its factorization.

57406997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 57406997 is about 7576.7405261102. The cubic root of 57406997 is about 385.7639231370.

The spelling of 57406997 in words is "fifty-seven million, four hundred six thousand, nine hundred ninety-seven".