494587257 has 16 divisors (see below), whose sum is σ = 684650880. Its totient is φ = 317206400.

The previous prime is 494587253. The next prime is 494587297. The reversal of 494587257 is 752785494.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 494587257 - 2² = 494587253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (494587253) 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 15 ways as a sum of consecutive naturals, for example, 14332 + ... + 34562.

It is an arithmetic number, because the mean of its divisors is an integer number (42790680).

Almost surely, 2^494587257 is an apocalyptic number.

It is an amenable number.

494587257 is a deficient number, since it is larger than the sum of its proper divisors (190063623).

494587257 is a wasteful number, since it uses less digits than its factorization.

494587257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20544.

The product of its digits is 2822400, while the sum is 51.

The square root of 494587257 is about 22239.3178177749. The cubic root of 494587257 is about 790.8260637678.

The spelling of 494587257 in words is "four hundred ninety-four million, five hundred eighty-seven thousand, two hundred fifty-seven".