2090251 has 2 divisors, whose sum is σ = 2090252. Its totient is φ = 2090250.

The previous prime is 2090239. The next prime is 2090279. The reversal of 2090251 is 1520902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2090251 - 2⁵ = 2090219 is a prime.

It is not a weakly prime, because it can be changed into another prime (2090281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045125 + 1045126.

It is an arithmetic number, because the mean of its divisors is an integer number (1045126).

2^2090251 is an apocalyptic number.

2090251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2090251 is an equidigital number, since it uses as much as digits as its factorization.

2090251 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2090251 is about 1445.7700370391. The cubic root of 2090251 is about 127.8594445095.

The spelling of 2090251 in words is "two million, ninety thousand, two hundred fifty-one".