57090213 has 12 divisors (see below), whose sum is σ = 82533568. Its totient is φ = 38027880.

The previous prime is 57090203. The next prime is 57090217. The reversal of 57090213 is 31209075.

57090213 is a `hidden beast` number, since 570 + 90 + 2 + 1 + 3 = 666.

It is not a de Polignac number, because 57090213 - 2¹⁰ = 57089189 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 (57090217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13908 + ... + 17538.

Almost surely, 2^57090213 is an apocalyptic number.

It is an amenable number.

57090213 is a deficient number, since it is larger than the sum of its proper divisors (25443355).

57090213 is a wasteful number, since it uses less digits than its factorization.

57090213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5384 (or 5381 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 57090213 is about 7555.8065750785. The cubic root of 57090213 is about 385.0530381757.

Adding to 57090213 its reverse (31209075), we get a palindrome (88299288).

The spelling of 57090213 in words is "fifty-seven million, ninety thousand, two hundred thirteen".