504397621 has 64 divisors (see below), whose sum is σ = 677376000. Its totient is φ = 372556800.

The previous prime is 504397603. The next prime is 504397627. The reversal of 504397621 is 126793405.

It is not a de Polignac number, because 504397621 - 2²⁷ = 370179893 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504397627) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5667345 + ... + 5667433.

It is an arithmetic number, because the mean of its divisors is an integer number (10584000).

Almost surely, 2^504397621 is an apocalyptic number.

It is an amenable number.

504397621 is a deficient number, since it is larger than the sum of its proper divisors (172978379).

504397621 is a wasteful number, since it uses less digits than its factorization.

504397621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 504397621 is about 22458.7982982171. The cubic root of 504397621 is about 796.0206665552.

The spelling of 504397621 in words is "five hundred four million, three hundred ninety-seven thousand, six hundred twenty-one".