503351121 has 24 divisors (see below), whose sum is σ = 830556480. Its totient is φ = 265502016.

The previous prime is 503351099. The next prime is 503351129. The reversal of 503351121 is 121153305.

It is not a de Polignac number, because 503351121 - 2⁵ = 503351089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (503351129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67366 + ... + 74463.

It is an arithmetic number, because the mean of its divisors is an integer number (34606520).

Almost surely, 2^503351121 is an apocalyptic number.

It is an amenable number.

503351121 is a deficient number, since it is larger than the sum of its proper divisors (327205359).

503351121 is a wasteful number, since it uses less digits than its factorization.

503351121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141865 (or 141852 counting only the distinct ones).

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

The square root of 503351121 is about 22435.4879822125. The cubic root of 503351121 is about 795.4697702173.

The spelling of 503351121 in words is "five hundred three million, three hundred fifty-one thousand, one hundred twenty-one".