57203449 has 2 divisors, whose sum is σ = 57203450. Its totient is φ = 57203448.

The previous prime is 57203441. The next prime is 57203473. The reversal of 57203449 is 94430275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34574400 + 22629049 = 5880^2 + 4757^2 .

It is a cyclic number.

It is not a de Polignac number, because 57203449 - 2³ = 57203441 is a prime.

It is not a weakly prime, because it can be changed into another prime (57203441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28601724 + 28601725.

It is an arithmetic number, because the mean of its divisors is an integer number (28601725).

Almost surely, 2^57203449 is an apocalyptic number.

It is an amenable number.

57203449 is a deficient number, since it is larger than the sum of its proper divisors (1).

57203449 is an equidigital number, since it uses as much as digits as its factorization.

57203449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 57203449 is about 7563.2961729659. The cubic root of 57203449 is about 385.3074487993.

The spelling of 57203449 in words is "fifty-seven million, two hundred three thousand, four hundred forty-nine".