22043961 has 8 divisors (see below), whose sum is σ = 32657760. Its totient is φ = 14695956.

The previous prime is 22043947. The next prime is 22043963. The reversal of 22043961 is 16934022.

22043961 is a `hidden beast` number, since 220 + 439 + 6 + 1 = 666.

It is not a de Polignac number, because 22043961 - 2¹⁷ = 21912889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 816443 = 22043961 / (2 + 2 + 0 + 4 + 3 + 9 + 6 + 1).

It is not an unprimeable number, because it can be changed into a prime (22043963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408195 + ... + 408248.

It is an arithmetic number, because the mean of its divisors is an integer number (4082220).

Almost surely, 2^22043961 is an apocalyptic number.

It is an amenable number.

22043961 is a deficient number, since it is larger than the sum of its proper divisors (10613799).

22043961 is an equidigital number, since it uses as much as digits as its factorization.

22043961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816452 (or 816446 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22043961 is about 4695.0996794530. The cubic root of 22043961 is about 280.3904459359.

Adding to 22043961 its reverse (16934022), we get a palindrome (38977983).

The spelling of 22043961 in words is "twenty-two million, forty-three thousand, nine hundred sixty-one".