257800083 has 4 divisors (see below), whose sum is σ = 343733448. Its totient is φ = 171866720.

The previous prime is 257800079. The next prime is 257800097. The reversal of 257800083 is 380008752.

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

It is a cyclic number.

It is not a de Polignac number, because 257800083 - 2² = 257800079 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257800033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42966678 + ... + 42966683.

It is an arithmetic number, because the mean of its divisors is an integer number (85933362).

Almost surely, 2^257800083 is an apocalyptic number.

257800083 is a deficient number, since it is larger than the sum of its proper divisors (85933365).

257800083 is an equidigital number, since it uses as much as digits as its factorization.

257800083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85933364.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 257800083 is about 16056.1540538200. The cubic root of 257800083 is about 636.4452031952.

The spelling of 257800083 in words is "two hundred fifty-seven million, eight hundred thousand, eighty-three".