2585551 has 4 divisors (see below), whose sum is σ = 2596104. Its totient is φ = 2575000.

The previous prime is 2585549. The next prime is 2585579. The reversal of 2585551 is 1555852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2585551 - 2¹ = 2585549 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 (2585521) 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, 4900 + ... + 5401.

It is an arithmetic number, because the mean of its divisors is an integer number (649026).

2^2585551 is an apocalyptic number.

2585551 is a deficient number, since it is larger than the sum of its proper divisors (10553).

2585551 is a wasteful number, since it uses less digits than its factorization.

2585551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10552.

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

The square root of 2585551 is about 1607.9648628002. The cubic root of 2585551 is about 137.2516906946.

It can be divided in two parts, 2585 and 551, that added together give a square (3136 = 56²).

The spelling of 2585551 in words is "two million, five hundred eighty-five thousand, five hundred fifty-one".