2259571561 has 24 divisors (see below), whose sum is σ = 2576193984. Its totient is φ = 1969837920.

The previous prime is 2259571553. The next prime is 2259571579. The reversal of 2259571561 is 1651759522.

2259571561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2259571561 - 2³ = 2259571553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2259571591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2191116 + ... + 2192146.

It is an arithmetic number, because the mean of its divisors is an integer number (107341416).

Almost surely, 2^2259571561 is an apocalyptic number.

It is an amenable number.

2259571561 is a deficient number, since it is larger than the sum of its proper divisors (316622423).

2259571561 is a wasteful number, since it uses less digits than its factorization.

2259571561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549 (or 1530 counting only the distinct ones).

The product of its digits is 189000, while the sum is 43.

The square root of 2259571561 is about 47534.9509413863. The cubic root of 2259571561 is about 1312.2261859768.

The spelling of 2259571561 in words is "two billion, two hundred fifty-nine million, five hundred seventy-one thousand, five hundred sixty-one".