22473149 has 2 divisors, whose sum is σ = 22473150. Its totient is φ = 22473148.

The previous prime is 22473131. The next prime is 22473161. The reversal of 22473149 is 94137422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22024249 + 448900 = 4693^2 + 670^2 .

It is a cyclic number.

It is not a de Polignac number, because 22473149 - 2²⁴ = 5695933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22473049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11236574 + 11236575.

It is an arithmetic number, because the mean of its divisors is an integer number (11236575).

Almost surely, 2^22473149 is an apocalyptic number.

It is an amenable number.

22473149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22473149 is an equidigital number, since it uses as much as digits as its factorization.

22473149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 22473149 is about 4740.5853014158. The cubic root of 22473149 is about 282.1984628136.

It can be divided in two parts, 22473 and 149, that added together give a palindrome (22622).

The spelling of 22473149 in words is "twenty-two million, four hundred seventy-three thousand, one hundred forty-nine".