57068781 has 48 divisors (see below), whose sum is σ = 99973440. Its totient is φ = 28600320.

The previous prime is 57068719. The next prime is 57068797. The reversal of 57068781 is 18786075.

It is not a de Polignac number, because 57068781 - 2⁷ = 57068653 is a prime.

It is a super-2 number, since 2×57068781² = 6513691529651922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57067781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46285 + ... + 47501.

It is an arithmetic number, because the mean of its divisors is an integer number (2082780).

Almost surely, 2^57068781 is an apocalyptic number.

It is an amenable number.

57068781 is a deficient number, since it is larger than the sum of its proper divisors (42904659).

57068781 is a wasteful number, since it uses less digits than its factorization.

57068781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 57068781 is about 7554.3881949500. The cubic root of 57068781 is about 385.0048484238.

The spelling of 57068781 in words is "fifty-seven million, sixty-eight thousand, seven hundred eighty-one".