57045449 has 2 divisors, whose sum is σ = 57045450. Its totient is φ = 57045448.

The previous prime is 57045433. The next prime is 57045491. The reversal of 57045449 is 94454075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52345225 + 4700224 = 7235^2 + 2168^2 .

It is a cyclic number.

It is not a de Polignac number, because 57045449 - 2⁴ = 57045433 is a prime.

It is a super-2 number, since 2×57045449² = 6508366503223202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57045419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28522724 + 28522725.

It is an arithmetic number, because the mean of its divisors is an integer number (28522725).

Almost surely, 2^57045449 is an apocalyptic number.

It is an amenable number.

57045449 is a deficient number, since it is larger than the sum of its proper divisors (1).

57045449 is an equidigital number, since it uses as much as digits as its factorization.

57045449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 57045449 is about 7552.8437690714. The cubic root of 57045449 is about 384.9523728120.

The spelling of 57045449 in words is "fifty-seven million, forty-five thousand, four hundred forty-nine".