57881669 has 2 divisors, whose sum is σ = 57881670. Its totient is φ = 57881668.

The previous prime is 57881633. The next prime is 57881687. The reversal of 57881669 is 96618875.

It is a happy number.

57881669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40157569 + 17724100 = 6337^2 + 4210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57881669 is a prime.

It is a super-2 number, since 2×57881669² = 6700575212451122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57881689) 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 as a sum of consecutive naturals, namely, 28940834 + 28940835.

It is an arithmetic number, because the mean of its divisors is an integer number (28940835).

Almost surely, 2^57881669 is an apocalyptic number.

It is an amenable number.

57881669 is a deficient number, since it is larger than the sum of its proper divisors (1).

57881669 is an equidigital number, since it uses as much as digits as its factorization.

57881669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 57881669 is about 7608.0003286015. Note that the first 3 decimals coincide. The cubic root of 57881669 is about 386.8242407544.

The spelling of 57881669 in words is "fifty-seven million, eight hundred eighty-one thousand, six hundred sixty-nine".