252137203 has 4 divisors (see below), whose sum is σ = 258951760. Its totient is φ = 245322648.

The previous prime is 252137191. The next prime is 252137213. The reversal of 252137203 is 302731252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252137203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252137213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3407223 + ... + 3407296.

It is an arithmetic number, because the mean of its divisors is an integer number (64737940).

Almost surely, 2^252137203 is an apocalyptic number.

252137203 is a deficient number, since it is larger than the sum of its proper divisors (6814557).

252137203 is an equidigital number, since it uses as much as digits as its factorization.

252137203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6814556.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 252137203 is about 15878.8287666314. The cubic root of 252137203 is about 631.7505717040.

Adding to 252137203 its reverse (302731252), we get a palindrome (554868455).

The spelling of 252137203 in words is "two hundred fifty-two million, one hundred thirty-seven thousand, two hundred three".