2247745 has 4 divisors (see below), whose sum is σ = 2697300. Its totient is φ = 1798192.

The previous prime is 2247737. The next prime is 2247793. The reversal of 2247745 is 5477422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1201216 + 1046529 = 1096^2 + 1023^2 .

It is a cyclic number.

It is not a de Polignac number, because 2247745 - 2³ = 2247737 is a prime.

It is a d-powerful number, because it can be written as 2 + 2²¹ + 4⁷ + 7² + 7⁶ + 4⁷ + 5³ .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224770 + ... + 224779.

It is an arithmetic number, because the mean of its divisors is an integer number (674325).

2^2247745 is an apocalyptic number.

It is an amenable number.

2247745 is a deficient number, since it is larger than the sum of its proper divisors (449555).

2247745 is an equidigital number, since it uses as much as digits as its factorization.

2247745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449554.

The product of its digits is 15680, while the sum is 31.

The square root of 2247745 is about 1499.2481449046. The cubic root of 2247745 is about 130.9932789901.

It can be divided in two parts, 22477 and 45, that added together give a palindrome (22522).

The spelling of 2247745 in words is "two million, two hundred forty-seven thousand, seven hundred forty-five".