504223521 has 8 divisors (see below), whose sum is σ = 673011744. Its totient is φ = 335792160.

The previous prime is 504223487. The next prime is 504223541. The reversal of 504223521 is 125322405.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 504223521 - 2¹³ = 504215329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 504223491 and 504223500.

It is not an unprimeable number, because it can be changed into a prime (504223541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85900 + ... + 91581.

It is an arithmetic number, because the mean of its divisors is an integer number (84126468).

Almost surely, 2^504223521 is an apocalyptic number.

It is an amenable number.

504223521 is a deficient number, since it is larger than the sum of its proper divisors (168788223).

504223521 is a wasteful number, since it uses less digits than its factorization.

504223521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178431.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 504223521 is about 22454.9219771524. The cubic root of 504223521 is about 795.9290700709.

Adding to 504223521 its reverse (125322405), we get a palindrome (629545926).

The spelling of 504223521 in words is "five hundred four million, two hundred twenty-three thousand, five hundred twenty-one".