2247845 has 4 divisors (see below), whose sum is σ = 2697420. Its totient is φ = 1798272.

The previous prime is 2247811. The next prime is 2247851. The reversal of 2247845 is 5487422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5487422 = 2 ⋅2743711.

It can be written as a sum of positive squares in 2 ways, for example, as 1503076 + 744769 = 1226^2 + 863^2 .

It is a cyclic number.

It is not a de Polignac number, because 2247845 - 2¹⁴ = 2231461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224780 + ... + 224789.

It is an arithmetic number, because the mean of its divisors is an integer number (674355).

2^2247845 is an apocalyptic number.

It is an amenable number.

2247845 is a deficient number, since it is larger than the sum of its proper divisors (449575).

2247845 is an equidigital number, since it uses as much as digits as its factorization.

2247845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449574.

The product of its digits is 17920, while the sum is 32.

The square root of 2247845 is about 1499.2814945833. The cubic root of 2247845 is about 130.9952215494.

The spelling of 2247845 in words is "two million, two hundred forty-seven thousand, eight hundred forty-five".