2551585 has 8 divisors (see below), whose sum is σ = 3094056. Its totient is φ = 2019840.

The previous prime is 2551559. The next prime is 2551603. The reversal of 2551585 is 5851552.

It can be written as a sum of positive squares in 4 ways, for example, as 431649 + 2119936 = 657^2 + 1456^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2551585 - 2⁷ = 2551457 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2146 + ... + 3115.

It is an arithmetic number, because the mean of its divisors is an integer number (386757).

2^2551585 is an apocalyptic number.

It is an amenable number.

2551585 is a deficient number, since it is larger than the sum of its proper divisors (542471).

2551585 is an equidigital number, since it uses as much as digits as its factorization.

2551585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5363.

The product of its digits is 10000, while the sum is 31.

The square root of 2551585 is about 1597.3681479233. The cubic root of 2551585 is about 136.6480211195.

It can be divided in two parts, 25515 and 85, that added together give a square (25600 = 160²).

The spelling of 2551585 in words is "two million, five hundred fifty-one thousand, five hundred eighty-five".