2551589 has 4 divisors (see below), whose sum is σ = 2554956. Its totient is φ = 2548224.

The previous prime is 2551559. The next prime is 2551603. The reversal of 2551589 is 9851552.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2356225 + 195364 = 1535^2 + 442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2551589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551559) by changing a digit.

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, 47 + ... + 2259.

It is an arithmetic number, because the mean of its divisors is an integer number (638739).

2^2551589 is an apocalyptic number.

It is an amenable number.

2551589 is a deficient number, since it is larger than the sum of its proper divisors (3367).

2551589 is a wasteful number, since it uses less digits than its factorization.

2551589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366.

The product of its digits is 18000, while the sum is 35.

The square root of 2551589 is about 1597.3693999824. The cubic root of 2551589 is about 136.6480925250.

The spelling of 2551589 in words is "two million, five hundred fifty-one thousand, five hundred eighty-nine".