504221405 has 32 divisors (see below), whose sum is σ = 643991040. Its totient is φ = 378362880.

The previous prime is 504221351. The next prime is 504221413. The reversal of 504221405 is 504122405.

It is a happy number.

It is not a de Polignac number, because 504221405 - 2⁸ = 504221149 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1642262 + ... + 1642568.

It is an arithmetic number, because the mean of its divisors is an integer number (20124720).

Almost surely, 2^504221405 is an apocalyptic number.

It is an amenable number.

504221405 is a deficient number, since it is larger than the sum of its proper divisors (139769635).

504221405 is a wasteful number, since it uses less digits than its factorization.

504221405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 504221405 is about 22454.8748604841. The cubic root of 504221405 is about 795.9279566836.

The spelling of 504221405 in words is "five hundred four million, two hundred twenty-one thousand, four hundred five".