2245917 has 4 divisors (see below), whose sum is σ = 2994560. Its totient is φ = 1497276.

The previous prime is 2245889. The next prime is 2245931. The reversal of 2245917 is 7195422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-2245917 is a prime.

It is a D-number.

It is a Duffinian number.

2245917 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2241917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374317 + ... + 374322.

It is an arithmetic number, because the mean of its divisors is an integer number (748640).

2^2245917 is an apocalyptic number.

It is an amenable number.

2245917 is a deficient number, since it is larger than the sum of its proper divisors (748643).

2245917 is an equidigital number, since it uses as much as digits as its factorization.

2245917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748642.

The product of its digits is 5040, while the sum is 30.

The square root of 2245917 is about 1498.6383819988. The cubic root of 2245917 is about 130.9577588493.

The spelling of 2245917 in words is "two million, two hundred forty-five thousand, nine hundred seventeen".