2561232 has 20 divisors (see below), whose sum is σ = 6616640. Its totient is φ = 853728.

The previous prime is 2561231. The next prime is 2561233. The reversal of 2561232 is 2321652.

It is an interprime number because it is at equal distance from previous prime (2561231) and next prime (2561233).

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

It is a junction number, because it is equal to n+sod(n) for n = 2561199 and 2561208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561231) 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, 26632 + ... + 26727.

It is an arithmetic number, because the mean of its divisors is an integer number (330832).

2^2561232 is an apocalyptic number.

It is an amenable number.

2561232 is an abundant number, since it is smaller than the sum of its proper divisors (4055408).

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

2561232 is a wasteful number, since it uses less digits than its factorization.

2561232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53370 (or 53364 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 2561232 is about 1600.3849536908. The cubic root of 2561232 is about 136.8200169061.

Adding to 2561232 its reverse (2321652), we get a palindrome (4882884).

The spelling of 2561232 in words is "two million, five hundred sixty-one thousand, two hundred thirty-two".