57591409 has 2 divisors, whose sum is σ = 57591410. Its totient is φ = 57591408.

The previous prime is 57591389. The next prime is 57591421. The reversal of 57591409 is 90419575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51480625 + 6110784 = 7175^2 + 2472^2 .

It is a cyclic number.

It is not a de Polignac number, because 57591409 - 2⁵ = 57591377 is a prime.

It is not a weakly prime, because it can be changed into another prime (57591449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28795704 + 28795705.

It is an arithmetic number, because the mean of its divisors is an integer number (28795705).

Almost surely, 2^57591409 is an apocalyptic number.

It is an amenable number.

57591409 is a deficient number, since it is larger than the sum of its proper divisors (1).

57591409 is an equidigital number, since it uses as much as digits as its factorization.

57591409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 57591409 is about 7588.9003814782. The cubic root of 57591409 is about 386.1765526114.

The spelling of 57591409 in words is "fifty-seven million, five hundred ninety-one thousand, four hundred nine".