252545441 has 4 divisors (see below), whose sum is σ = 253295172. Its totient is φ = 251795712.

The previous prime is 252545411. The next prime is 252545443. The reversal of 252545441 is 144545252.

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 174134416 + 78411025 = 13196^2 + 8855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252545441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252545398 and 252545407.

It is not an unprimeable number, because it can be changed into a prime (252545443) 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, 374360 + ... + 375033.

It is an arithmetic number, because the mean of its divisors is an integer number (63323793).

Almost surely, 2^252545441 is an apocalyptic number.

It is an amenable number.

252545441 is a deficient number, since it is larger than the sum of its proper divisors (749731).

252545441 is an equidigital number, since it uses as much as digits as its factorization.

252545441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749730.

The product of its digits is 32000, while the sum is 32.

The square root of 252545441 is about 15891.6783569263. The cubic root of 252545441 is about 632.0913458538.

The spelling of 252545441 in words is "two hundred fifty-two million, five hundred forty-five thousand, four hundred forty-one".