22045005 has 24 divisors (see below), whose sum is σ = 40460472. Its totient is φ = 11065344.

The previous prime is 22044991. The next prime is 22045087. The reversal of 22045005 is 50054022.

It can be written as a sum of positive squares in 4 ways, for example, as 10634121 + 11410884 = 3261^2 + 3378^2 .

It is not a de Polignac number, because 22045005 - 2⁴ = 22044989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13644 + ... + 15173.

It is an arithmetic number, because the mean of its divisors is an integer number (1685853).

Almost surely, 2^22045005 is an apocalyptic number.

It is an amenable number.

22045005 is a deficient number, since it is larger than the sum of its proper divisors (18415467).

22045005 is a wasteful number, since it uses less digits than its factorization.

22045005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28845 (or 28842 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 22045005 is about 4695.2108578849. The cubic root of 22045005 is about 280.3948722881.

Adding to 22045005 its reverse (50054022), we get a palindrome (72099027).

The spelling of 22045005 in words is "twenty-two million, forty-five thousand, five".