497164221 has 12 divisors (see below), whose sum is σ = 731676348. Its totient is φ = 325188864.

The previous prime is 497164193. The next prime is 497164231. The reversal of 497164221 is 122461794.

It is a happy number.

497164221 is a `hidden beast` number, since 4 + 9 + 7 + 1 + 642 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 405579321 + 91584900 = 20139^2 + 9570^2 .

It is not a de Polignac number, because 497164221 - 2⁵ = 497164189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497164231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 520660 + ... + 521613.

It is an arithmetic number, because the mean of its divisors is an integer number (60973029).

Almost surely, 2^497164221 is an apocalyptic number.

It is an amenable number.

497164221 is a deficient number, since it is larger than the sum of its proper divisors (234512127).

497164221 is a wasteful number, since it uses less digits than its factorization.

497164221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042332 (or 1042329 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 497164221 is about 22297.1796647020. The cubic root of 497164221 is about 792.1971740868.

The spelling of 497164221 in words is "four hundred ninety-seven million, one hundred sixty-four thousand, two hundred twenty-one".