2251118 has 4 divisors (see below), whose sum is σ = 3376680. Its totient is φ = 1125558.

The previous prime is 2251111. The next prime is 2251121. The reversal of 2251118 is 8111522.

It is a happy number.

2251118 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.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2251118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251111) 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 as a sum of consecutive naturals, namely, 562778 + ... + 562781.

It is an arithmetic number, because the mean of its divisors is an integer number (844170).

2^2251118 is an apocalyptic number.

2251118 is a deficient number, since it is larger than the sum of its proper divisors (1125562).

2251118 is a wasteful number, since it uses less digits than its factorization.

2251118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125561.

The product of its digits is 160, while the sum is 20.

The square root of 2251118 is about 1500.3726203847. The cubic root of 2251118 is about 131.0587697380.

The spelling of 2251118 in words is "two million, two hundred fifty-one thousand, one hundred eighteen".