497308257 has 6 divisors (see below), whose sum is σ = 718334162. Its totient is φ = 331538832.

The previous prime is 497308241. The next prime is 497308271. The reversal of 497308257 is 752803794.

497308257 is a `hidden beast` number, since 4 + 97 + 308 + 257 = 666.

It can be written as a sum of positive squares in only one way, i.e., 404975376 + 92332881 = 20124^2 + 9609^2 .

It is not a de Polignac number, because 497308257 - 2⁴ = 497308241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497308297) 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 5 ways as a sum of consecutive naturals, for example, 27628228 + ... + 27628245.

Almost surely, 2^497308257 is an apocalyptic number.

It is an amenable number.

497308257 is a deficient number, since it is larger than the sum of its proper divisors (221025905).

497308257 is a wasteful number, since it uses less digits than its factorization.

497308257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55256479 (or 55256476 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 497308257 is about 22300.4093460187. The cubic root of 497308257 is about 792.2736705373.

The spelling of 497308257 in words is "four hundred ninety-seven million, three hundred eight thousand, two hundred fifty-seven".