22081445 has 8 divisors (see below), whose sum is σ = 26530944. Its totient is φ = 17643024.

The previous prime is 22081429. The next prime is 22081459. The reversal of 22081445 is 54418022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22081445 - 2⁴ = 22081429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2552 + ... + 7118.

It is an arithmetic number, because the mean of its divisors is an integer number (3316368).

Almost surely, 2^22081445 is an apocalyptic number.

It is an amenable number.

22081445 is a deficient number, since it is larger than the sum of its proper divisors (4449499).

22081445 is an equidigital number, since it uses as much as digits as its factorization.

22081445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5539.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 22081445 is about 4699.0898054836. The cubic root of 22081445 is about 280.5492831472.

Adding to 22081445 its reverse (54418022), we get a palindrome (76499467).

The spelling of 22081445 in words is "twenty-two million, eighty-one thousand, four hundred forty-five".