257345099 has 12 divisors (see below), whose sum is σ = 299508552. Its totient is φ = 220186560.

The previous prime is 257345089. The next prime is 257345111. The reversal of 257345099 is 990543752.

It is not a de Polignac number, because 257345099 - 2²⁴ = 240567883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257345059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60497 + ... + 64610.

It is an arithmetic number, because the mean of its divisors is an integer number (24959046).

Almost surely, 2^257345099 is an apocalyptic number.

257345099 is a deficient number, since it is larger than the sum of its proper divisors (42163453).

257345099 is a wasteful number, since it uses less digits than its factorization.

257345099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125146 (or 125135 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 257345099 is about 16041.9792731446. The cubic root of 257345099 is about 636.0705680634.

The spelling of 257345099 in words is "two hundred fifty-seven million, three hundred forty-five thousand, ninety-nine".