2561195 has 24 divisors (see below), whose sum is σ = 3812256. Its totient is φ = 1617408.

The previous prime is 2561191. The next prime is 2561201. The reversal of 2561195 is 5911652.

2561195 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 2561195 - 2² = 2561191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2561191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5699 + ... + 6131.

It is an arithmetic number, because the mean of its divisors is an integer number (158844).

2^2561195 is an apocalyptic number.

2561195 is a deficient number, since it is larger than the sum of its proper divisors (1251061).

2561195 is a wasteful number, since it uses less digits than its factorization.

2561195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 458 counting only the distinct ones).

The product of its digits is 2700, while the sum is 29.

The square root of 2561195 is about 1600.3733939303. The cubic root of 2561195 is about 136.8193580611.

The spelling of 2561195 in words is "two million, five hundred sixty-one thousand, one hundred ninety-five".