57251393 has 8 divisors (see below), whose sum is σ = 63255168. Its totient is φ = 51540544.

The previous prime is 57251387. The next prime is 57251399. The reversal of 57251393 is 39315275.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (57251387) and next prime (57251399).

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 57251393 - 2⁶ = 57251329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57251399) 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, 72821 + ... + 73602.

It is an arithmetic number, because the mean of its divisors is an integer number (7906896).

Almost surely, 2^57251393 is an apocalyptic number.

It is an amenable number.

57251393 is a deficient number, since it is larger than the sum of its proper divisors (6003775).

57251393 is a wasteful number, since it uses less digits than its factorization.

57251393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146463.

The product of its digits is 28350, while the sum is 35.

The square root of 57251393 is about 7566.4650266819. The cubic root of 57251393 is about 385.4150648147.

The spelling of 57251393 in words is "fifty-seven million, two hundred fifty-one thousand, three hundred ninety-three".