504221131 has 4 divisors (see below), whose sum is σ = 506423200. Its totient is φ = 502019064.

The previous prime is 504221119. The next prime is 504221141. The reversal of 504221131 is 131122405.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-504221131 is a prime.

It is a super-2 number, since 2×504221131² = 508477897893838322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 504221099 and 504221108.

It is not an unprimeable number, because it can be changed into a prime (504221101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1100691 + ... + 1101148.

It is an arithmetic number, because the mean of its divisors is an integer number (126605800).

Almost surely, 2^504221131 is an apocalyptic number.

504221131 is a deficient number, since it is larger than the sum of its proper divisors (2202069).

504221131 is a wasteful number, since it uses less digits than its factorization.

504221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202068.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 504221131 is about 22454.8687593582. The cubic root of 504221131 is about 795.9278125113.

Adding to 504221131 its reverse (131122405), we get a palindrome (635343536).

The spelling of 504221131 in words is "five hundred four million, two hundred twenty-one thousand, one hundred thirty-one".