57130399 has 4 divisors (see below), whose sum is σ = 57158536. Its totient is φ = 57102264.

The previous prime is 57130393. The next prime is 57130417. The reversal of 57130399 is 99303175.

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

It is a cyclic number.

It is not a de Polignac number, because 57130399 - 2¹⁵ = 57097631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57130393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10764 + ... + 15169.

It is an arithmetic number, because the mean of its divisors is an integer number (14289634).

Almost surely, 2^57130399 is an apocalyptic number.

57130399 is a deficient number, since it is larger than the sum of its proper divisors (28137).

57130399 is a wasteful number, since it uses less digits than its factorization.

57130399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28136.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 57130399 is about 7558.4653865715. The cubic root of 57130399 is about 385.1433637109.

The spelling of 57130399 in words is "fifty-seven million, one hundred thirty thousand, three hundred ninety-nine".