252647243 has 4 divisors (see below), whose sum is σ = 253277688. Its totient is φ = 252016800.

The previous prime is 252647209. The next prime is 252647257. The reversal of 252647243 is 342746252.

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 252647243 - 2¹² = 252643147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252647443) 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, 314621 + ... + 315422.

It is an arithmetic number, because the mean of its divisors is an integer number (63319422).

Almost surely, 2^252647243 is an apocalyptic number.

252647243 is a deficient number, since it is larger than the sum of its proper divisors (630445).

252647243 is an equidigital number, since it uses as much as digits as its factorization.

252647243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630444.

The product of its digits is 80640, while the sum is 35.

The square root of 252647243 is about 15894.8810313258. The cubic root of 252647243 is about 632.1762672294.

Subtracting 252647243 from its reverse (342746252), we obtain a palindrome (90099009).

The spelling of 252647243 in words is "two hundred fifty-two million, six hundred forty-seven thousand, two hundred forty-three".