2561132 has 36 divisors (see below), whose sum is σ = 5314680. Its totient is φ = 1076544.

The previous prime is 2561129. The next prime is 2561137. The reversal of 2561132 is 2311652.

It is not an unprimeable number, because it can be changed into a prime (2561137) 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, 14219 + ... + 14397.

It is an arithmetic number, because the mean of its divisors is an integer number (147630).

2^2561132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2561132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2657340).

2561132 is an abundant number, since it is smaller than the sum of its proper divisors (2753548).

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

2561132 is a wasteful number, since it uses less digits than its factorization.

2561132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 261 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 2561132 is about 1600.3537109027. The cubic root of 2561132 is about 136.8182362292.

Adding to 2561132 its reverse (2311652), we get a palindrome (4872784).

The spelling of 2561132 in words is "two million, five hundred sixty-one thousand, one hundred thirty-two".