57125217 has 4 divisors (see below), whose sum is σ = 76166960. Its totient is φ = 38083476.

The previous prime is 57125213. The next prime is 57125221. The reversal of 57125217 is 71252175.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (57125213) and next prime (57125221).

It is not a de Polignac number, because 57125217 - 2² = 57125213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57125213) 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, 9520867 + ... + 9520872.

It is an arithmetic number, because the mean of its divisors is an integer number (19041740).

Almost surely, 2^57125217 is an apocalyptic number.

It is an amenable number.

57125217 is a deficient number, since it is larger than the sum of its proper divisors (19041743).

57125217 is a wasteful number, since it uses less digits than its factorization.

57125217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19041742.

The product of its digits is 4900, while the sum is 30.

The square root of 57125217 is about 7558.1225843459. The cubic root of 57125217 is about 385.1317185781.

The spelling of 57125217 in words is "fifty-seven million, one hundred twenty-five thousand, two hundred seventeen".