57068391 has 4 divisors (see below), whose sum is σ = 76091192. Its totient is φ = 38045592.

The previous prime is 57068383. The next prime is 57068411. The reversal of 57068391 is 19386075.

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

It is not a de Polignac number, because 57068391 - 2³ = 57068383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57068311) 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, 9511396 + ... + 9511401.

It is an arithmetic number, because the mean of its divisors is an integer number (19022798).

Almost surely, 2^57068391 is an apocalyptic number.

57068391 is a deficient number, since it is larger than the sum of its proper divisors (19022801).

57068391 is a wasteful number, since it uses less digits than its factorization.

57068391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19022800.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 57068391 is about 7554.3623820942. The cubic root of 57068391 is about 385.0039713988.

The spelling of 57068391 in words is "fifty-seven million, sixty-eight thousand, three hundred ninety-one".