57126689 has 2 divisors, whose sum is σ = 57126690. Its totient is φ = 57126688.

The previous prime is 57126623. The next prime is 57126701. The reversal of 57126689 is 98662175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56776225 + 350464 = 7535^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 57126689 - 2²⁴ = 40349473 is a prime.

It is a super-2 number, since 2×57126689² = 6526917192205442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57125689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28563344 + 28563345.

It is an arithmetic number, because the mean of its divisors is an integer number (28563345).

Almost surely, 2^57126689 is an apocalyptic number.

It is an amenable number.

57126689 is a deficient number, since it is larger than the sum of its proper divisors (1).

57126689 is an equidigital number, since it uses as much as digits as its factorization.

57126689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 57126689 is about 7558.2199623986. The cubic root of 57126689 is about 385.1350265686.

The spelling of 57126689 in words is "fifty-seven million, one hundred twenty-six thousand, six hundred eighty-nine".