22166543 has 8 divisors (see below), whose sum is σ = 25922688. Its totient is φ = 18557784.

The previous prime is 22166539. The next prime is 22166579. The reversal of 22166543 is 34566122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22166543 - 2² = 22166539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22166143) 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, 36521 + ... + 37122.

It is an arithmetic number, because the mean of its divisors is an integer number (3240336).

Almost surely, 2^22166543 is an apocalyptic number.

22166543 is a deficient number, since it is larger than the sum of its proper divisors (3756145).

22166543 is an equidigital number, since it uses as much as digits as its factorization.

22166543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73693.

The product of its digits is 8640, while the sum is 29.

The square root of 22166543 is about 4708.1358306659. The cubic root of 22166543 is about 280.9092170106.

The spelling of 22166543 in words is "twenty-two million, one hundred sixty-six thousand, five hundred forty-three".