2561122553 has 4 divisors (see below), whose sum is σ = 2793951888. Its totient is φ = 2328293220.

The previous prime is 2561122517. The next prime is 2561122561. The reversal of 2561122553 is 3552211652.

2561122553 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 not a de Polignac number, because 2561122553 - 2¹⁰ = 2561121529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2561122453) 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, 116414651 + ... + 116414672.

It is an arithmetic number, because the mean of its divisors is an integer number (698487972).

Almost surely, 2^2561122553 is an apocalyptic number.

It is an amenable number.

2561122553 is a deficient number, since it is larger than the sum of its proper divisors (232829335).

2561122553 is a wasteful number, since it uses less digits than its factorization.

2561122553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232829334.

The product of its digits is 18000, while the sum is 32.

The square root of 2561122553 is about 50607.5345477331. The cubic root of 2561122553 is about 1368.1806800629.

The spelling of 2561122553 in words is "two billion, five hundred sixty-one million, one hundred twenty-two thousand, five hundred fifty-three".