503531121 has 16 divisors (see below), whose sum is σ = 675671040. Its totient is φ = 333546960.

The previous prime is 503531107. The next prime is 503531131. The reversal of 503531121 is 121135305.

It is not a de Polignac number, because 503531121 - 2⁶ = 503531057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (503531131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487876 + ... + 488906.

It is an arithmetic number, because the mean of its divisors is an integer number (42229440).

Almost surely, 2^503531121 is an apocalyptic number.

It is an amenable number.

503531121 is a deficient number, since it is larger than the sum of its proper divisors (172139919).

503531121 is a wasteful number, since it uses less digits than its factorization.

503531121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 503531121 is about 22439.4991254261. The cubic root of 503531121 is about 795.5645797769.

Adding to 503531121 its reverse (121135305), we get a palindrome (624666426).

The spelling of 503531121 in words is "five hundred three million, five hundred thirty-one thousand, one hundred twenty-one".