2581552 has 20 divisors (see below), whose sum is σ = 5296536. Its totient is φ = 1214720.

The previous prime is 2581541. The next prime is 2581559. The reversal of 2581552 is 2551852.

It is a d-powerful number, because it can be written as 2⁴ + 5⁶ + 8 + 1 + 5⁷ + 5⁸ + 2²¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2581552.

It is not an unprimeable number, because it can be changed into a prime (2581559) 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, 4474 + ... + 5017.

2^2581552 is an apocalyptic number.

It is an amenable number.

2581552 is an abundant number, since it is smaller than the sum of its proper divisors (2714984).

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

2581552 is a wasteful number, since it uses less digits than its factorization.

2581552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9516 (or 9510 counting only the distinct ones).

The product of its digits is 4000, while the sum is 28.

The square root of 2581552 is about 1606.7208842858. The cubic root of 2581552 is about 137.1808930544.

The spelling of 2581552 in words is "two million, five hundred eighty-one thousand, five hundred fifty-two".