57645769 has 2 divisors, whose sum is σ = 57645770. Its totient is φ = 57645768.

The previous prime is 57645743. The next prime is 57645779. The reversal of 57645769 is 96754675.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30470400 + 27175369 = 5520^2 + 5213^2 .

It is a cyclic number.

It is not a de Polignac number, because 57645769 - 2⁵ = 57645737 is a prime.

It is a super-2 number, since 2×57645769² = 6646069367202722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57645719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28822884 + 28822885.

It is an arithmetic number, because the mean of its divisors is an integer number (28822885).

Almost surely, 2^57645769 is an apocalyptic number.

It is an amenable number.

57645769 is a deficient number, since it is larger than the sum of its proper divisors (1).

57645769 is an equidigital number, since it uses as much as digits as its factorization.

57645769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 49.

The square root of 57645769 is about 7592.4810832823. The cubic root of 57645769 is about 386.2980172322.

The spelling of 57645769 in words is "fifty-seven million, six hundred forty-five thousand, seven hundred sixty-nine".