494256257 has 4 divisors (see below), whose sum is σ = 539188656. Its totient is φ = 449323860.

The previous prime is 494256247. The next prime is 494256299. The reversal of 494256257 is 752652494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 494256257 - 2⁸ = 494256001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494256247) 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 3 ways as a sum of consecutive naturals, for example, 22466183 + ... + 22466204.

It is an arithmetic number, because the mean of its divisors is an integer number (134797164).

Almost surely, 2^494256257 is an apocalyptic number.

It is an amenable number.

494256257 is a deficient number, since it is larger than the sum of its proper divisors (44932399).

494256257 is a wasteful number, since it uses less digits than its factorization.

494256257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44932398.

The product of its digits is 604800, while the sum is 44.

The square root of 494256257 is about 22231.8747972365. The cubic root of 494256257 is about 790.6496056271.

The spelling of 494256257 in words is "four hundred ninety-four million, two hundred fifty-six thousand, two hundred fifty-seven".