257264099 has 2 divisors, whose sum is σ = 257264100. Its totient is φ = 257264098.

The previous prime is 257264093. The next prime is 257264107. The reversal of 257264099 is 990462752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257264099 - 2⁴ = 257264083 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (257264093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128632049 + 128632050.

It is an arithmetic number, because the mean of its divisors is an integer number (128632050).

Almost surely, 2^257264099 is an apocalyptic number.

257264099 is a deficient number, since it is larger than the sum of its proper divisors (1).

257264099 is an equidigital number, since it uses as much as digits as its factorization.

257264099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 257264099 is about 16039.4544483283. The cubic root of 257264099 is about 636.0038261376.

The spelling of 257264099 in words is "two hundred fifty-seven million, two hundred sixty-four thousand, ninety-nine".