496391257 has 2 divisors, whose sum is σ = 496391258. Its totient is φ = 496391256.

The previous prime is 496391201. The next prime is 496391263. The reversal of 496391257 is 752193694.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491242896 + 5148361 = 22164^2 + 2269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-496391257 is a prime.

It is not a weakly prime, because it can be changed into another prime (496391557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248195628 + 248195629.

It is an arithmetic number, because the mean of its divisors is an integer number (248195629).

Almost surely, 2^496391257 is an apocalyptic number.

It is an amenable number.

496391257 is a deficient number, since it is larger than the sum of its proper divisors (1).

496391257 is an equidigital number, since it uses as much as digits as its factorization.

496391257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 496391257 is about 22279.8396987052. The cubic root of 496391257 is about 791.7864060486.

The spelling of 496391257 in words is "four hundred ninety-six million, three hundred ninety-one thousand, two hundred fifty-seven".