2561094 has 24 divisors (see below), whose sum is σ = 5580432. Its totient is φ = 848880.

The previous prime is 2561093. The next prime is 2561099. The reversal of 2561094 is 4901652.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4464 + ... + 5004.

It is an arithmetic number, because the mean of its divisors is an integer number (232518).

2^2561094 is an apocalyptic number.

2561094 is an abundant number, since it is smaller than the sum of its proper divisors (3019338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2561094 is a wasteful number, since it uses less digits than its factorization.

2561094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2561094 is about 1600.3418384833. The cubic root of 2561094 is about 136.8175595599.

The spelling of 2561094 in words is "two million, five hundred sixty-one thousand, ninety-four".