45257857 has 2 divisors, whose sum is σ = 45257858. Its totient is φ = 45257856.

The previous prime is 45257843. The next prime is 45257869. The reversal of 45257857 is 75875254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45144961 + 112896 = 6719^2 + 336^2 .

It is a cyclic number.

It is not a de Polignac number, because 45257857 - 2¹⁹ = 44733569 is a prime.

It is not a weakly prime, because it can be changed into another prime (45257837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22628928 + 22628929.

It is an arithmetic number, because the mean of its divisors is an integer number (22628929).

Almost surely, 2^45257857 is an apocalyptic number.

It is an amenable number.

45257857 is a deficient number, since it is larger than the sum of its proper divisors (1).

45257857 is an equidigital number, since it uses as much as digits as its factorization.

45257857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 392000, while the sum is 43.

The square root of 45257857 is about 6727.3960043987. The cubic root of 45257857 is about 356.3674219679.

The spelling of 45257857 in words is "forty-five million, two hundred fifty-seven thousand, eight hundred fifty-seven".