57883981 has 8 divisors (see below), whose sum is σ = 58540664. Its totient is φ = 57231360.

The previous prime is 57883979. The next prime is 57884017. The reversal of 57883981 is 18938875.

It can be written as a sum of positive squares in 4 ways, for example, as 1768900 + 56115081 = 1330^2 + 7491^2 .

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 57883981 - 2¹ = 57883979 is a prime.

It is a super-2 number, since 2×57883981² = 6701110512816722, 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 (57883901) 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, 34105 + ... + 35761.

It is an arithmetic number, because the mean of its divisors is an integer number (7317583).

Almost surely, 2^57883981 is an apocalyptic number.

It is an amenable number.

57883981 is a deficient number, since it is larger than the sum of its proper divisors (656683).

57883981 is a wasteful number, since it uses less digits than its factorization.

57883981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031.

The product of its digits is 483840, while the sum is 49.

The square root of 57883981 is about 7608.1522723983. The cubic root of 57883981 is about 386.8293910651.

The spelling of 57883981 in words is "fifty-seven million, eight hundred eighty-three thousand, nine hundred eighty-one".