2561532 has 12 divisors (see below), whose sum is σ = 5976936. Its totient is φ = 853840.

The previous prime is 2561527. The next prime is 2561549. The reversal of 2561532 is 2351652.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2561532² = 13122892374048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106719 + ... + 106742.

It is an arithmetic number, because the mean of its divisors is an integer number (498078).

2^2561532 is an apocalyptic number.

It is an amenable number.

2561532 is an abundant number, since it is smaller than the sum of its proper divisors (3415404).

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

2561532 is a wasteful number, since it uses less digits than its factorization.

2561532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213468 (or 213466 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 2561532 is about 1600.4786783959. The cubic root of 2561532 is about 136.8253586586.

The spelling of 2561532 in words is "two million, five hundred sixty-one thousand, five hundred thirty-two".