57216497 has 4 divisors (see below), whose sum is σ = 61617780. Its totient is φ = 52815216.

The previous prime is 57216491. The next prime is 57216499. The reversal of 57216497 is 79461275.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8202496 + 49014001 = 2864^2 + 7001^2 .

It is a cyclic number.

It is not a de Polignac number, because 57216497 - 2²⁴ = 40439281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57216491) 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, 2200622 + ... + 2200647.

It is an arithmetic number, because the mean of its divisors is an integer number (15404445).

Almost surely, 2^57216497 is an apocalyptic number.

It is an amenable number.

57216497 is a deficient number, since it is larger than the sum of its proper divisors (4401283).

57216497 is a wasteful number, since it uses less digits than its factorization.

57216497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4401282.

The product of its digits is 105840, while the sum is 41.

The square root of 57216497 is about 7564.1587106565. The cubic root of 57216497 is about 385.3367425422.

The spelling of 57216497 in words is "fifty-seven million, two hundred sixteen thousand, four hundred ninety-seven".