57144238 has 8 divisors (see below), whose sum is σ = 85769640. Its totient is φ = 28554360.

The previous prime is 57144211. The next prime is 57144247. The reversal of 57144238 is 83244175.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4408 + ... + 11563.

It is an arithmetic number, because the mean of its divisors is an integer number (10721205).

Almost surely, 2^57144238 is an apocalyptic number.

57144238 is a deficient number, since it is larger than the sum of its proper divisors (28625402).

57144238 is a wasteful number, since it uses less digits than its factorization.

57144238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17762.

The product of its digits is 26880, while the sum is 34.

The square root of 57144238 is about 7559.3807947477. The cubic root of 57144238 is about 385.1744596411.

The spelling of 57144238 in words is "fifty-seven million, one hundred forty-four thousand, two hundred thirty-eight".