503425121 has 4 divisors (see below), whose sum is σ = 529921200. Its totient is φ = 476929044.

The previous prime is 503425103. The next prime is 503425147. The reversal of 503425121 is 121524305.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503425121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503424121) 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 3 ways as a sum of consecutive naturals, for example, 13248011 + ... + 13248048.

It is an arithmetic number, because the mean of its divisors is an integer number (132480300).

Almost surely, 2^503425121 is an apocalyptic number.

It is an amenable number.

503425121 is a deficient number, since it is larger than the sum of its proper divisors (26496079).

503425121 is a wasteful number, since it uses less digits than its factorization.

503425121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26496078.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 503425121 is about 22437.1370945582. The cubic root of 503425121 is about 795.5087502163.

Adding to 503425121 its reverse (121524305), we get a palindrome (624949426).

The spelling of 503425121 in words is "five hundred three million, four hundred twenty-five thousand, one hundred twenty-one".