2561587193 has 4 divisors (see below), whose sum is σ = 2794458768. Its totient is φ = 2328715620.

The previous prime is 2561587153. The next prime is 2561587199. The reversal of 2561587193 is 3917851652.

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 2561587193 - 2¹⁰ = 2561586169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2561587199) 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, 116435771 + ... + 116435792.

It is an arithmetic number, because the mean of its divisors is an integer number (698614692).

Almost surely, 2^2561587193 is an apocalyptic number.

It is an amenable number.

2561587193 is a deficient number, since it is larger than the sum of its proper divisors (232871575).

2561587193 is a wasteful number, since it uses less digits than its factorization.

2561587193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232871574.

The product of its digits is 453600, while the sum is 47.

The square root of 2561587193 is about 50612.1249603294. The cubic root of 2561587193 is about 1368.2634137103.

The spelling of 2561587193 in words is "two billion, five hundred sixty-one million, five hundred eighty-seven thousand, one hundred ninety-three".