22247045 has 4 divisors (see below), whose sum is σ = 26696460. Its totient is φ = 17797632.

The previous prime is 22247023. The next prime is 22247053. The reversal of 22247045 is 54074222.

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 2328676 + 19918369 = 1526^2 + 4463^2 .

It is a cyclic number.

It is not a de Polignac number, because 22247045 - 2⁸ = 22246789 is a prime.

It is a super-2 number, since 2×22247045² = 989862022464050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224700 + ... + 2224709.

It is an arithmetic number, because the mean of its divisors is an integer number (6674115).

Almost surely, 2^22247045 is an apocalyptic number.

It is an amenable number.

22247045 is a deficient number, since it is larger than the sum of its proper divisors (4449415).

22247045 is an equidigital number, since it uses as much as digits as its factorization.

22247045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4449414.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 22247045 is about 4716.6773262542. The cubic root of 22247045 is about 281.2488645222.

The spelling of 22247045 in words is "twenty-two million, two hundred forty-seven thousand, forty-five".