22049143 has 4 divisors (see below), whose sum is σ = 22062040. Its totient is φ = 22036248.

The previous prime is 22049141. The next prime is 22049147. The reversal of 22049143 is 34194022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34194022 = 2 ⋅17097011.

It is a cyclic number.

It is not a de Polignac number, because 22049143 - 2¹ = 22049141 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 (22049141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3405 + ... + 7462.

It is an arithmetic number, because the mean of its divisors is an integer number (5515510).

Almost surely, 2^22049143 is an apocalyptic number.

22049143 is a deficient number, since it is larger than the sum of its proper divisors (12897).

22049143 is a wasteful number, since it uses less digits than its factorization.

22049143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12896.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 22049143 is about 4695.6514989935. The cubic root of 22049143 is about 280.4124152099.

The spelling of 22049143 in words is "twenty-two million, forty-nine thousand, one hundred forty-three".