43161227 has 2 divisors, whose sum is σ = 43161228. Its totient is φ = 43161226.

The previous prime is 43161211. The next prime is 43161229. The reversal of 43161227 is 72216134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43161227 - 2⁴ = 43161211 is a prime.

It is a super-2 number, since 2×43161227² = 3725783032291058, which contains 22 as substring.

Together with 43161229, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 43161196 and 43161205.

It is not a weakly prime, because it can be changed into another prime (43161229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21580613 + 21580614.

It is an arithmetic number, because the mean of its divisors is an integer number (21580614).

Almost surely, 2^43161227 is an apocalyptic number.

43161227 is a deficient number, since it is larger than the sum of its proper divisors (1).

43161227 is an equidigital number, since it uses as much as digits as its factorization.

43161227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 43161227 is about 6569.7204658950. The cubic root of 43161227 is about 350.7771222198. Note that the first 3 decimals are identical.

The spelling of 43161227 in words is "forty-three million, one hundred sixty-one thousand, two hundred twenty-seven".