2252612561 has 4 divisors (see below), whose sum is σ = 2286233712. Its totient is φ = 2218991412.

The previous prime is 2252612543. The next prime is 2252612563. The reversal of 2252612561 is 1652162522.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1652162522 = 2 ⋅826081261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2252612561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2252612563) 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, 16810475 + ... + 16810608.

It is an arithmetic number, because the mean of its divisors is an integer number (571558428).

Almost surely, 2^2252612561 is an apocalyptic number.

It is an amenable number.

2252612561 is a deficient number, since it is larger than the sum of its proper divisors (33621151).

2252612561 is an equidigital number, since it uses as much as digits as its factorization.

2252612561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33621150.

The product of its digits is 14400, while the sum is 32.

The square root of 2252612561 is about 47461.6957240257. The cubic root of 2252612561 is about 1310.8776747652.

The spelling of 2252612561 in words is "two billion, two hundred fifty-two million, six hundred twelve thousand, five hundred sixty-one".