2251849 has 2 divisors, whose sum is σ = 2251850. Its totient is φ = 2251848.

The previous prime is 2251841. The next prime is 2251859. The reversal of 2251849 is 9481522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 1849 = 1500^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251849 - 2³ = 2251841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2251849.

It is not a weakly prime, because it can be changed into another prime (2251841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125924 + 1125925.

It is an arithmetic number, because the mean of its divisors is an integer number (1125925).

2^2251849 is an apocalyptic number.

It is an amenable number.

2251849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251849 is an equidigital number, since it uses as much as digits as its factorization.

2251849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 2251849 is about 1500.6162067631. The cubic root of 2251849 is about 131.0729543332.

It can be divided in two parts, 225 and 1849, that multiplied together give a square (416025 = 645²).

The spelling of 2251849 in words is "two million, two hundred fifty-one thousand, eight hundred forty-nine".