497166561 has 24 divisors (see below), whose sum is σ = 746763264. Its totient is φ = 318386880.

The previous prime is 497166529. The next prime is 497166583. The reversal of 497166561 is 165661794.

It is not a de Polignac number, because 497166561 - 2⁵ = 497166529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (497166511) 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 23 ways as a sum of consecutive naturals, for example, 31720 + ... + 44726.

It is an arithmetic number, because the mean of its divisors is an integer number (31115136).

Almost surely, 2^497166561 is an apocalyptic number.

It is an amenable number.

497166561 is a deficient number, since it is larger than the sum of its proper divisors (249596703).

497166561 is a wasteful number, since it uses less digits than its factorization.

497166561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13181 (or 13178 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 497166561 is about 22297.2321376443. The cubic root of 497166561 is about 792.1984169615.

The spelling of 497166561 in words is "four hundred ninety-seven million, one hundred sixty-six thousand, five hundred sixty-one".