57144215 has 8 divisors (see below), whose sum is σ = 68629680. Its totient is φ = 45677632.

The previous prime is 57144211. The next prime is 57144247. The reversal of 57144215 is 51244175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57144215 - 2² = 57144211 is a prime.

It is a super-2 number, since 2×57144215² = 6530922615932450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57144211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3131 + ... + 11139.

It is an arithmetic number, because the mean of its divisors is an integer number (8578710).

Almost surely, 2^57144215 is an apocalyptic number.

57144215 is a deficient number, since it is larger than the sum of its proper divisors (11485465).

57144215 is a wasteful number, since it uses less digits than its factorization.

57144215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9441.

The product of its digits is 5600, while the sum is 29.

The square root of 57144215 is about 7559.3792734589. The cubic root of 57144215 is about 385.1744079648.

The spelling of 57144215 in words is "fifty-seven million, one hundred forty-four thousand, two hundred fifteen".