57868981 has 4 divisors (see below), whose sum is σ = 57994432. Its totient is φ = 57743532.

The previous prime is 57868973. The next prime is 57868991. The reversal of 57868981 is 18986875.

57868981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57868981 - 2³ = 57868973 is a prime.

It is a super-2 number, since 2×57868981² = 6697637923956722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57868991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62031 + ... + 62956.

It is an arithmetic number, because the mean of its divisors is an integer number (14498608).

Almost surely, 2^57868981 is an apocalyptic number.

It is an amenable number.

57868981 is a deficient number, since it is larger than the sum of its proper divisors (125451).

57868981 is a wasteful number, since it uses less digits than its factorization.

57868981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125450.

The product of its digits is 967680, while the sum is 52.

The square root of 57868981 is about 7607.1664238401. The cubic root of 57868981 is about 386.7959739777.

The spelling of 57868981 in words is "fifty-seven million, eight hundred sixty-eight thousand, nine hundred eighty-one".