57390290217 has 24 divisors (see below), whose sum is σ = 89872965000. Its totient is φ = 35080063488.

The previous prime is 57390290203. The next prime is 57390290219. The reversal of 57390290217 is 71209209375.

It can be written as a sum of positive squares in 4 ways, for example, as 7326675216 + 50063615001 = 85596^2 + 223749^2 .

It is not a de Polignac number, because 57390290217 - 2⁴ = 57390290201 is a prime.

It is a super-2 number, since 2×57390290217² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57390290219) 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 23 ways as a sum of consecutive naturals, for example, 1628592 + ... + 1663457.

It is an arithmetic number, because the mean of its divisors is an integer number (3744706875).

Almost surely, 2^57390290217 is an apocalyptic number.

It is an amenable number.

57390290217 is a deficient number, since it is larger than the sum of its proper divisors (32482674783).

57390290217 is a wasteful number, since it uses less digits than its factorization.

57390290217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292217 (or 3292214 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The spelling of 57390290217 in words is "fifty-seven billion, three hundred ninety million, two hundred ninety thousand, two hundred seventeen".