2251939 has 8 divisors (see below), whose sum is σ = 2404080. Its totient is φ = 2102016.

The previous prime is 2251927. The next prime is 2251943. The reversal of 2251939 is 9391522.

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

It is not a de Polignac number, because 2251939 - 2⁹ = 2251427 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2251939.

It is not an unprimeable number, because it can be changed into a prime (2251979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1887 + ... + 2839.

It is an arithmetic number, because the mean of its divisors is an integer number (300510).

2^2251939 is an apocalyptic number.

2251939 is a deficient number, since it is larger than the sum of its proper divisors (152141).

2251939 is a wasteful number, since it uses less digits than its factorization.

2251939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109.

The product of its digits is 4860, while the sum is 31.

The square root of 2251939 is about 1500.6461941444. The cubic root of 2251939 is about 131.0747005143.

The spelling of 2251939 in words is "two million, two hundred fifty-one thousand, nine hundred thirty-nine".