22445071 has 4 divisors (see below), whose sum is σ = 24485544. Its totient is φ = 20404600.

The previous prime is 22445063. The next prime is 22445089. The reversal of 22445071 is 17054422.

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

It is a cyclic number.

It is not a de Polignac number, because 22445071 - 2³ = 22445063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22445021) 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, 1020220 + ... + 1020241.

It is an arithmetic number, because the mean of its divisors is an integer number (6121386).

Almost surely, 2^22445071 is an apocalyptic number.

22445071 is a deficient number, since it is larger than the sum of its proper divisors (2040473).

22445071 is a wasteful number, since it uses less digits than its factorization.

22445071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040472.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 22445071 is about 4737.6229271651. The cubic root of 22445071 is about 282.0808873811.

Adding to 22445071 its reverse (17054422), we get a palindrome (39499493).

The spelling of 22445071 in words is "twenty-two million, four hundred forty-five thousand, seventy-one".