57497005309 has 4 divisors (see below), whose sum is σ = 57693241116. Its totient is φ = 57300769504.

The previous prime is 57497005301. The next prime is 57497005327. The reversal of 57497005309 is 90350079475.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56606878084 + 890127225 = 237922^2 + 29835^2 .

It is a cyclic number.

It is not a de Polignac number, because 57497005309 - 2³ = 57497005301 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57497005301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98117464 + ... + 98118049.

It is an arithmetic number, because the mean of its divisors is an integer number (14423310279).

Almost surely, 2^57497005309 is an apocalyptic number.

It is an amenable number.

57497005309 is a deficient number, since it is larger than the sum of its proper divisors (196235807).

57497005309 is a wasteful number, since it uses less digits than its factorization.

57497005309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196235806.

The product of its (nonzero) digits is 1190700, while the sum is 49.

The spelling of 57497005309 in words is "fifty-seven billion, four hundred ninety-seven million, five thousand, three hundred nine".