2561130 has 96 divisors (see below), whose sum is σ = 7862400. Its totient is φ = 570240.

The previous prime is 2561129. The next prime is 2561137. The reversal of 2561130 is 311652.

2561130 is a `hidden beast` number, since 25 + 611 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 12771 + ... + 12969.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

2^2561130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2561130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3931200).

2561130 is an abundant number, since it is smaller than the sum of its proper divisors (5301270).

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

2561130 is a wasteful number, since it uses less digits than its factorization.

2561130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2561130 is about 1600.3530860407. The cubic root of 2561130 is about 136.8182006152.

Adding to 2561130 its reverse (311652), we get a palindrome (2872782).

The spelling of 2561130 in words is "two million, five hundred sixty-one thousand, one hundred thirty".