257094449 has 2 divisors, whose sum is σ = 257094450. Its totient is φ = 257094448.

The previous prime is 257094433. The next prime is 257094469. The reversal of 257094449 is 944490752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228010000 + 29084449 = 15100^2 + 5393^2 .

It is a cyclic number.

It is not a de Polignac number, because 257094449 - 2⁴ = 257094433 is a prime.

It is a super-2 number, since 2×257094449² = 132195111413227202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (257094469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128547224 + 128547225.

It is an arithmetic number, because the mean of its divisors is an integer number (128547225).

Almost surely, 2^257094449 is an apocalyptic number.

It is an amenable number.

257094449 is a deficient number, since it is larger than the sum of its proper divisors (1).

257094449 is an equidigital number, since it uses as much as digits as its factorization.

257094449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 257094449 is about 16034.1650546575. The cubic root of 257094449 is about 635.8639934707.

The spelling of 257094449 in words is "two hundred fifty-seven million, ninety-four thousand, four hundred forty-nine".