43122173 has 2 divisors, whose sum is σ = 43122174. Its totient is φ = 43122172.

The previous prime is 43122143. The next prime is 43122193. The reversal of 43122173 is 37122134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40475044 + 2647129 = 6362^2 + 1627^2 .

It is a cyclic number.

It is not a de Polignac number, because 43122173 - 2⁸ = 43121917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43122103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21561086 + 21561087.

It is an arithmetic number, because the mean of its divisors is an integer number (21561087).

Almost surely, 2^43122173 is an apocalyptic number.

It is an amenable number.

43122173 is a deficient number, since it is larger than the sum of its proper divisors (1).

43122173 is an equidigital number, since it uses as much as digits as its factorization.

43122173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 23.

The square root of 43122173 is about 6566.7475206528. The cubic root of 43122173 is about 350.6712912489.

The spelling of 43122173 in words is "forty-three million, one hundred twenty-two thousand, one hundred seventy-three".