2242945 has 8 divisors (see below), whose sum is σ = 2708136. Its totient is φ = 1783296.

The previous prime is 2242939. The next prime is 2242949. The reversal of 2242945 is 5492422.

It can be written as a sum of positive squares in 4 ways, for example, as 744769 + 1498176 = 863^2 + 1224^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2242945 - 2⁹ = 2242433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2242949) 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, 432 + ... + 2161.

It is an arithmetic number, because the mean of its divisors is an integer number (338517).

2^2242945 is an apocalyptic number.

2242945 is the 865-th octagonal number.

It is an amenable number.

2242945 is a deficient number, since it is larger than the sum of its proper divisors (465191).

2242945 is a wasteful number, since it uses less digits than its factorization.

2242945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771.

The product of its digits is 5760, while the sum is 28.

The square root of 2242945 is about 1497.6464869922. The cubic root of 2242945 is about 130.8999683101.

The spelling of 2242945 in words is "two million, two hundred forty-two thousand, nine hundred forty-five".