252131441 has 4 divisors (see below), whose sum is σ = 256888692. Its totient is φ = 247374192.

The previous prime is 252131419. The next prime is 252131447. The reversal of 252131441 is 144131252.

252131441 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 can be written as a sum of positive squares in 2 ways, for example, as 142301041 + 109830400 = 11929^2 + 10480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252131441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252131447) 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, 2378546 + ... + 2378651.

It is an arithmetic number, because the mean of its divisors is an integer number (64222173).

Almost surely, 2^252131441 is an apocalyptic number.

It is an amenable number.

252131441 is a deficient number, since it is larger than the sum of its proper divisors (4757251).

252131441 is an equidigital number, since it uses as much as digits as its factorization.

252131441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4757250.

The product of its digits is 960, while the sum is 23.

The square root of 252131441 is about 15878.6473290391. The cubic root of 252131441 is about 631.7457592785.

Adding to 252131441 its reverse (144131252), we get a palindrome (396262693).

The spelling of 252131441 in words is "two hundred fifty-two million, one hundred thirty-one thousand, four hundred forty-one".