2243955 has 48 divisors (see below), whose sum is σ = 4333824. Its totient is φ = 987840.

The previous prime is 2243911. The next prime is 2243959. The reversal of 2243955 is 5593422.

It is not a de Polignac number, because 2243955 - 2⁸ = 2243699 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

2243955 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2243959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31570 + ... + 31640.

It is an arithmetic number, because the mean of its divisors is an integer number (90288).

2^2243955 is an apocalyptic number.

2243955 is a deficient number, since it is larger than the sum of its proper divisors (2089869).

2243955 is a wasteful number, since it uses less digits than its factorization.

2243955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 129 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 2243955 is about 1497.9836447705. The cubic root of 2243955 is about 130.9196134832.

The spelling of 2243955 in words is "two million, two hundred forty-three thousand, nine hundred fifty-five".