2251867 has 4 divisors (see below), whose sum is σ = 2304280. Its totient is φ = 2199456.

The previous prime is 2251859. The next prime is 2251877. The reversal of 2251867 is 7681522.

2251867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7681522 = 2 ⋅3840761.

It is a cyclic number.

It is not a de Polignac number, because 2251867 - 2³ = 2251859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2251807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26142 + ... + 26227.

It is an arithmetic number, because the mean of its divisors is an integer number (576070).

2^2251867 is an apocalyptic number.

2251867 is a deficient number, since it is larger than the sum of its proper divisors (52413).

2251867 is an equidigital number, since it uses as much as digits as its factorization.

2251867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52412.

The product of its digits is 6720, while the sum is 31.

The square root of 2251867 is about 1500.6222042873. The cubic root of 2251867 is about 131.0733035731.

The spelling of 2251867 in words is "two million, two hundred fifty-one thousand, eight hundred sixty-seven".