252387643 has 4 divisors (see below), whose sum is σ = 257149728. Its totient is φ = 247625560.

The previous prime is 252387623. The next prime is 252387679. The reversal of 252387643 is 346783252.

252387643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 252387643 - 2⁹ = 252387131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252387596 and 252387605.

It is not an unprimeable number, because it can be changed into a prime (252387623) 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, 2380963 + ... + 2381068.

It is an arithmetic number, because the mean of its divisors is an integer number (64287432).

Almost surely, 2^252387643 is an apocalyptic number.

252387643 is a deficient number, since it is larger than the sum of its proper divisors (4762085).

252387643 is an equidigital number, since it uses as much as digits as its factorization.

252387643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4762084.

The product of its digits is 241920, while the sum is 40.

The square root of 252387643 is about 15886.7127814410. The cubic root of 252387643 is about 631.9596685193.

The spelling of 252387643 in words is "two hundred fifty-two million, three hundred eighty-seven thousand, six hundred forty-three".