57323409 has 32 divisors (see below), whose sum is σ = 91736064. Its totient is φ = 31375680.

The previous prime is 57323393. The next prime is 57323417. The reversal of 57323409 is 90432375.

It is a happy number.

It is not a de Polignac number, because 57323409 - 2⁴ = 57323393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 57323409.

It is not an unprimeable number, because it can be changed into a prime (57323419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18742 + ... + 21584.

It is an arithmetic number, because the mean of its divisors is an integer number (2866752).

Almost surely, 2^57323409 is an apocalyptic number.

It is an amenable number.

57323409 is a deficient number, since it is larger than the sum of its proper divisors (34412655).

57323409 is a wasteful number, since it uses less digits than its factorization.

57323409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 57323409 is about 7571.2224244173. Note that the first 3 decimals coincide. The cubic root of 57323409 is about 385.5766004557.

The spelling of 57323409 in words is "fifty-seven million, three hundred twenty-three thousand, four hundred nine".