252611641 has 4 divisors (see below), whose sum is σ = 256382032. Its totient is φ = 248841252.

The previous prime is 252611629. The next prime is 252611647. The reversal of 252611641 is 146116252.

252611641 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252611641 - 2⁹ = 252611129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252611647) 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, 1885095 + ... + 1885228.

It is an arithmetic number, because the mean of its divisors is an integer number (64095508).

Almost surely, 2^252611641 is an apocalyptic number.

It is an amenable number.

252611641 is a deficient number, since it is larger than the sum of its proper divisors (3770391).

252611641 is an equidigital number, since it uses as much as digits as its factorization.

252611641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770390.

The product of its digits is 2880, while the sum is 28.

The square root of 252611641 is about 15893.7610715652. The cubic root of 252611641 is about 632.1465712833.

Adding to 252611641 its reverse (146116252), we get a palindrome (398727893).

The spelling of 252611641 in words is "two hundred fifty-two million, six hundred eleven thousand, six hundred forty-one".