257494161 has 8 divisors (see below), whose sum is σ = 355164480. Its totient is φ = 165743312.

The previous prime is 257494093. The next prime is 257494207. The reversal of 257494161 is 161494752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 257494161 - 2⁷ = 257494033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257494561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1479765 + ... + 1479938.

It is an arithmetic number, because the mean of its divisors is an integer number (44395560).

Almost surely, 2^257494161 is an apocalyptic number.

It is an amenable number.

257494161 is a deficient number, since it is larger than the sum of its proper divisors (97670319).

257494161 is a wasteful number, since it uses less digits than its factorization.

257494161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959735.

The product of its digits is 60480, while the sum is 39.

The square root of 257494161 is about 16046.6245983384. The cubic root of 257494161 is about 636.1933547428.

The spelling of 257494161 in words is "two hundred fifty-seven million, four hundred ninety-four thousand, one hundred sixty-one".