503261 has 4 divisors (see below), whose sum is σ = 549024. Its totient is φ = 457500.

The previous prime is 503249. The next prime is 503267. The reversal of 503261 is 162305.

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 not a de Polignac number, because 503261 - 2⁶ = 503197 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22865 + ... + 22886.

It is an arithmetic number, because the mean of its divisors is an integer number (137256).

2⁵⁰³²⁶¹ is an apocalyptic number.

It is an amenable number.

503261 is a deficient number, since it is larger than the sum of its proper divisors (45763).

503261 is a wasteful number, since it uses less digits than its factorization.

503261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45762.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 503261 is about 709.4089088812. The cubic root of 503261 is about 79.5422293213.

Adding to 503261 its reverse (162305), we get a palindrome (665566).

The spelling of 503261 in words is "five hundred three thousand, two hundred sixty-one".