252013503 has 8 divisors (see below), whose sum is σ = 384020608. Its totient is φ = 144007704.

The previous prime is 252013501. The next prime is 252013589. The reversal of 252013503 is 305310252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 252013503 - 2¹ = 252013501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 12000643 = 252013503 / (2 + 5 + 2 + 0 + 1 + 3 + 5 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252013503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252013501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6000301 + ... + 6000342.

It is an arithmetic number, because the mean of its divisors is an integer number (48002576).

Almost surely, 2^252013503 is an apocalyptic number.

252013503 is a deficient number, since it is larger than the sum of its proper divisors (132007105).

252013503 is a wasteful number, since it uses less digits than its factorization.

252013503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12000653.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 252013503 is about 15874.9331652136. The cubic root of 252013503 is about 631.6472412842.

Adding to 252013503 its reverse (305310252), we get a palindrome (557323755).

The spelling of 252013503 in words is "two hundred fifty-two million, thirteen thousand, five hundred three".