22045147 has 2 divisors, whose sum is σ = 22045148. Its totient is φ = 22045146.

The previous prime is 22045099. The next prime is 22045157. The reversal of 22045147 is 74154022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22045147 - 2¹⁵ = 22012379 is a prime.

It is not a weakly prime, because it can be changed into another prime (22045157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11022573 + 11022574.

It is an arithmetic number, because the mean of its divisors is an integer number (11022574).

Almost surely, 2^22045147 is an apocalyptic number.

22045147 is a deficient number, since it is larger than the sum of its proper divisors (1).

22045147 is an equidigital number, since it uses as much as digits as its factorization.

22045147 is an evil number, because the sum of its binary digits is even.

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

The square root of 22045147 is about 4695.2259796521. The cubic root of 22045147 is about 280.3954743291.

Adding to 22045147 its reverse (74154022), we get a palindrome (96199169).

The spelling of 22045147 in words is "twenty-two million, forty-five thousand, one hundred forty-seven".