2117445 has 32 divisors (see below), whose sum is σ = 3798144. Its totient is φ = 998400.

The previous prime is 2117441. The next prime is 2117447. The reversal of 2117445 is 5447112.

It is not a de Polignac number, because 2117445 - 2² = 2117441 is a prime.

2117445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6609 + ... + 6921.

It is an arithmetic number, because the mean of its divisors is an integer number (118692).

2^2117445 is an apocalyptic number.

It is an amenable number.

2117445 is a deficient number, since it is larger than the sum of its proper divisors (1680699).

2117445 is a wasteful number, since it uses less digits than its factorization.

2117445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373.

The product of its digits is 1120, while the sum is 24.

The square root of 2117445 is about 1455.1443227392. The cubic root of 2117445 is about 128.4115375741.

The spelling of 2117445 in words is "two million, one hundred seventeen thousand, four hundred forty-five".