257345098 has 4 divisors (see below), whose sum is σ = 386017650. Its totient is φ = 128672548.

The previous prime is 257345089. The next prime is 257345111. The reversal of 257345098 is 890543752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 255584169 + 1760929 = 15987^2 + 1327^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64336273 + ... + 64336276.

Almost surely, 2^257345098 is an apocalyptic number.

257345098 is a deficient number, since it is larger than the sum of its proper divisors (128672552).

257345098 is a wasteful number, since it uses less digits than its factorization.

257345098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128672551.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 257345098 is about 16041.9792419763. The cubic root of 257345098 is about 636.0705672395.

The spelling of 257345098 in words is "two hundred fifty-seven million, three hundred forty-five thousand, ninety-eight".