57113211 has 4 divisors (see below), whose sum is σ = 76150952. Its totient is φ = 38075472.

The previous prime is 57113207. The next prime is 57113219. The reversal of 57113211 is 11231175.

It is a happy number.

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

It is not a de Polignac number, because 57113211 - 2² = 57113207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57113219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9518866 + ... + 9518871.

It is an arithmetic number, because the mean of its divisors is an integer number (19037738).

Almost surely, 2^57113211 is an apocalyptic number.

57113211 is a deficient number, since it is larger than the sum of its proper divisors (19037741).

57113211 is a wasteful number, since it uses less digits than its factorization.

57113211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19037740.

The product of its digits is 210, while the sum is 21.

The square root of 57113211 is about 7557.3282977518. The cubic root of 57113211 is about 385.1047356587.

Adding to 57113211 its reverse (11231175), we get a palindrome (68344386).

The spelling of 57113211 in words is "fifty-seven million, one hundred thirteen thousand, two hundred eleven".