2581596 has 18 divisors (see below), whose sum is σ = 6525792. Its totient is φ = 860520.

The previous prime is 2581583. The next prime is 2581597. The reversal of 2581596 is 6951852.

It is a happy number.

2581596 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 71711 = 2581596 / (2 + 5 + 8 + 1 + 5 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 2581596.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35820 + ... + 35891.

It is an arithmetic number, because the mean of its divisors is an integer number (362544).

2^2581596 is an apocalyptic number.

It is an amenable number.

2581596 is an abundant number, since it is smaller than the sum of its proper divisors (3944196).

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

2581596 is a wasteful number, since it uses less digits than its factorization.

2581596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71721 (or 71716 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 2581596 is about 1606.7345767114. The cubic root of 2581596 is about 137.1816724209.

The spelling of 2581596 in words is "two million, five hundred eighty-one thousand, five hundred ninety-six".