497254921 has 4 divisors (see below), whose sum is σ = 497597200. Its totient is φ = 496912644.

The previous prime is 497254873. The next prime is 497254937. The reversal of 497254921 is 129452794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 129452794 = 2 ⋅64726397.

It is a cyclic number.

It is not a de Polignac number, because 497254921 - 2⁹ = 497254409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497254991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168951 + ... + 171868.

It is an arithmetic number, because the mean of its divisors is an integer number (124399300).

Almost surely, 2^497254921 is an apocalyptic number.

It is an amenable number.

497254921 is a deficient number, since it is larger than the sum of its proper divisors (342279).

497254921 is a wasteful number, since it uses less digits than its factorization.

497254921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342278.

The product of its digits is 181440, while the sum is 43.

The square root of 497254921 is about 22299.2134614654. The cubic root of 497254921 is about 792.2453459058.

The spelling of 497254921 in words is "four hundred ninety-seven million, two hundred fifty-four thousand, nine hundred twenty-one".