252270643 has 4 divisors (see below), whose sum is σ = 252815968. Its totient is φ = 251725320.

The previous prime is 252270631. The next prime is 252270649. The reversal of 252270643 is 346072252.

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-252270643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252270649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271968 + ... + 272893.

It is an arithmetic number, because the mean of its divisors is an integer number (63203992).

Almost surely, 2^252270643 is an apocalyptic number.

252270643 is a deficient number, since it is larger than the sum of its proper divisors (545325).

252270643 is an equidigital number, since it uses as much as digits as its factorization.

252270643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545324.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 252270643 is about 15883.0300320814. The cubic root of 252270643 is about 631.8620003600.

The spelling of 252270643 in words is "two hundred fifty-two million, two hundred seventy thousand, six hundred forty-three".