57711213 has 24 divisors (see below), whose sum is σ = 96032768. Its totient is φ = 32713632.

The previous prime is 57711197. The next prime is 57711233. The reversal of 57711213 is 31211775.

It is a happy number.

It is not a de Polignac number, because 57711213 - 2⁴ = 57711197 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 (57711233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4395 + ... + 11607.

Almost surely, 2^57711213 is an apocalyptic number.

It is an amenable number.

57711213 is a deficient number, since it is larger than the sum of its proper divisors (38321555).

57711213 is a wasteful number, since it uses less digits than its factorization.

57711213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7353 (or 7350 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 57711213 is about 7596.7896508986. The cubic root of 57711213 is about 386.4441472198. Note that the first 3 decimals are identical.

Adding to 57711213 its reverse (31211775), we get a palindrome (88922988).

The spelling of 57711213 in words is "fifty-seven million, seven hundred eleven thousand, two hundred thirteen".