252003647 has 4 divisors (see below), whose sum is σ = 288004176. Its totient is φ = 216003120.

The previous prime is 252003643. The next prime is 252003667. The reversal of 252003647 is 746300252.

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

It is a cyclic number.

It is not a de Polignac number, because 252003647 - 2² = 252003643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252003641) 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, 18000254 + ... + 18000267.

It is an arithmetic number, because the mean of its divisors is an integer number (72001044).

Almost surely, 2^252003647 is an apocalyptic number.

252003647 is a deficient number, since it is larger than the sum of its proper divisors (36000529).

252003647 is an equidigital number, since it uses as much as digits as its factorization.

252003647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36000528.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 252003647 is about 15874.6227356747. The cubic root of 252003647 is about 631.6390068096.

Adding to 252003647 its reverse (746300252), we get a palindrome (998303899).

The spelling of 252003647 in words is "two hundred fifty-two million, three thousand, six hundred forty-seven".