2551290 has 32 divisors (see below), whose sum is σ = 6998400. Its totient is φ = 583104.

The previous prime is 2551279. The next prime is 2551313. The reversal of 2551290 is 921552.

It is a self number, because there is not a number n which added to its sum of digits gives 2551290.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5865 + ... + 6284.

It is an arithmetic number, because the mean of its divisors is an integer number (218700).

2^2551290 is an apocalyptic number.

2551290 is an abundant number, since it is smaller than the sum of its proper divisors (4447110).

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

2551290 is a wasteful number, since it uses less digits than its factorization.

2551290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12166.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 2551290 is about 1597.2758058645. The cubic root of 2551290 is about 136.6427547563.

It can be divided in two parts, 25 and 51290, that added together give a palindrome (51315).

The spelling of 2551290 in words is "two million, five hundred fifty-one thousand, two hundred ninety".