57136489 has 2 divisors, whose sum is σ = 57136490. Its totient is φ = 57136488.

The previous prime is 57136483. The next prime is 57136511. The reversal of 57136489 is 98463175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29888089 + 27248400 = 5467^2 + 5220^2 .

It is a cyclic number.

It is not a de Polignac number, because 57136489 - 2³ = 57136481 is a prime.

It is not a weakly prime, because it can be changed into another prime (57136481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28568244 + 28568245.

It is an arithmetic number, because the mean of its divisors is an integer number (28568245).

Almost surely, 2^57136489 is an apocalyptic number.

It is an amenable number.

57136489 is a deficient number, since it is larger than the sum of its proper divisors (1).

57136489 is an equidigital number, since it uses as much as digits as its factorization.

57136489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 57136489 is about 7558.8682353908. The cubic root of 57136489 is about 385.1570484263.

The spelling of 57136489 in words is "fifty-seven million, one hundred thirty-six thousand, four hundred eighty-nine".