497418021 has 12 divisors (see below), whose sum is σ = 718830060. Its totient is φ = 331456320.

The previous prime is 497418013. The next prime is 497418059. The reversal of 497418021 is 120814794.

It can be written as a sum of positive squares in 2 ways, for example, as 191517921 + 305900100 = 13839^2 + 17490^2 .

It is not a de Polignac number, because 497418021 - 2³ = 497418013 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497418721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9265 + ... + 32873.

It is an arithmetic number, because the mean of its divisors is an integer number (59902505).

Almost surely, 2^497418021 is an apocalyptic number.

It is an amenable number.

497418021 is a deficient number, since it is larger than the sum of its proper divisors (221412039).

497418021 is a wasteful number, since it uses less digits than its factorization.

497418021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25956 (or 25953 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 497418021 is about 22302.8702412941. The cubic root of 497418021 is about 792.3319554666.

The spelling of 497418021 in words is "four hundred ninety-seven million, four hundred eighteen thousand, twenty-one".