252845881 has 4 divisors (see below), whose sum is σ = 257616612. Its totient is φ = 248075152.

The previous prime is 252845861. The next prime is 252845897. The reversal of 252845881 is 188548252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 171845881 + 81000000 = 13109^2 + 9000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252845881 is a prime.

It is a super-2 number, since 2×252845881² = 127862079077332322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252845821) 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, 2385286 + ... + 2385391.

It is an arithmetic number, because the mean of its divisors is an integer number (64404153).

Almost surely, 2^252845881 is an apocalyptic number.

It is an amenable number.

252845881 is a deficient number, since it is larger than the sum of its proper divisors (4770731).

252845881 is an equidigital number, since it uses as much as digits as its factorization.

252845881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770730.

The product of its digits is 204800, while the sum is 43.

The square root of 252845881 is about 15901.1282933004. The cubic root of 252845881 is about 632.3419017749.

The spelling of 252845881 in words is "two hundred fifty-two million, eight hundred forty-five thousand, eight hundred eighty-one".