2551090 has 16 divisors (see below), whose sum is σ = 4611672. Its totient is φ = 1016064.

The previous prime is 2551079. The next prime is 2551097. The reversal of 2551090 is 901552.

It can be written as a sum of positive squares in 4 ways, for example, as 1912689 + 638401 = 1383^2 + 799^2 .

It is not an unprimeable number, because it can be changed into a prime (2551097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2992 + ... + 3748.

2^2551090 is an apocalyptic number.

2551090 is a deficient number, since it is larger than the sum of its proper divisors (2060582).

2551090 is a wasteful number, since it uses less digits than its factorization.

2551090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 2551090 is about 1597.2131980421. The cubic root of 2551090 is about 136.6391841097.

It can be divided in two parts, 25510 and 90, that added together give a square (25600 = 160²).

The spelling of 2551090 in words is "two million, five hundred fifty-one thousand, ninety".