503221053406 has 16 divisors (see below), whose sum is σ = 757266516864. Its totient is φ = 250798994464.

The previous prime is 503221053353. The next prime is 503221053431. The reversal of 503221053406 is 604350122305.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17517651 + ... + 17546353.

It is an arithmetic number, because the mean of its divisors is an integer number (47329157304).

Almost surely, 2^503221053406 is an apocalyptic number.

503221053406 is a deficient number, since it is larger than the sum of its proper divisors (254045463458).

503221053406 is a wasteful number, since it uses less digits than its factorization.

503221053406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56675.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 503221053406 in words is "five hundred three billion, two hundred twenty-one million, fifty-three thousand, four hundred six".