2251090 has 8 divisors (see below), whose sum is σ = 4051980. Its totient is φ = 900432.

The previous prime is 2251061. The next prime is 2251099. The reversal of 2251090 is 901522.

It can be written as a sum of positive squares in 2 ways, for example, as 1979649 + 271441 = 1407^2 + 521^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2251099) 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, 112545 + ... + 112564.

2^2251090 is an apocalyptic number.

2251090 is a deficient number, since it is larger than the sum of its proper divisors (1800890).

2251090 is a wasteful number, since it uses less digits than its factorization.

2251090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225116.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2251090 is about 1500.3632893403. The cubic root of 2251090 is about 131.0582263546.

The spelling of 2251090 in words is "two million, two hundred fifty-one thousand, ninety".