43161263 has 4 divisors (see below), whose sum is σ = 43221360. Its totient is φ = 43101168.

The previous prime is 43161257. The next prime is 43161301. The reversal of 43161263 is 36216134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36216134 = 2 ⋅18108067.

It is a cyclic number.

It is not a de Polignac number, because 43161263 - 2¹⁴ = 43144879 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43161763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28958 + ... + 30411.

It is an arithmetic number, because the mean of its divisors is an integer number (10805340).

Almost surely, 2^43161263 is an apocalyptic number.

43161263 is a deficient number, since it is larger than the sum of its proper divisors (60097).

43161263 is an equidigital number, since it uses as much as digits as its factorization.

43161263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60096.

The product of its digits is 2592, while the sum is 26.

The square root of 43161263 is about 6569.7232057371. The cubic root of 43161263 is about 350.7772197454. Note that the first 3 decimals are identical.

Adding to 43161263 its reverse (36216134), we get a palindrome (79377397).

The spelling of 43161263 in words is "forty-three million, one hundred sixty-one thousand, two hundred sixty-three".