57090817 has 4 divisors (see below), whose sum is σ = 65246656. Its totient is φ = 48934980.

The previous prime is 57090773. The next prime is 57090823. The reversal of 57090817 is 71809075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57090817 is a prime.

It is a super-2 number, since 2×57090817² = 6518722771454978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57090857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4077909 + ... + 4077922.

It is an arithmetic number, because the mean of its divisors is an integer number (16311664).

Almost surely, 2^57090817 is an apocalyptic number.

It is an amenable number.

57090817 is a deficient number, since it is larger than the sum of its proper divisors (8155839).

57090817 is an equidigital number, since it uses as much as digits as its factorization.

57090817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155838.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 57090817 is about 7555.8465442331. The cubic root of 57090817 is about 385.0543960921.

The spelling of 57090817 in words is "fifty-seven million, ninety thousand, eight hundred seventeen".