22144573 has 12 divisors (see below), whose sum is σ = 24490620. Its totient is φ = 20007680.

The previous prime is 22144559. The next prime is 22144589. The reversal of 22144573 is 37544122.

It can be written as a sum of positive squares in 2 ways, for example, as 11035684 + 11108889 = 3322^2 + 3333^2 .

It is not a de Polignac number, because 22144573 - 2⁵ = 22144541 is a prime.

It is a super-2 number, since 2×22144573² = 980764226704658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23373 + ... + 24301.

It is an arithmetic number, because the mean of its divisors is an integer number (2040885).

Almost surely, 2^22144573 is an apocalyptic number.

It is an amenable number.

22144573 is a deficient number, since it is larger than the sum of its proper divisors (2346047).

22144573 is a wasteful number, since it uses less digits than its factorization.

22144573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1137 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 22144573 is about 4705.8020570355. The cubic root of 22144573 is about 280.8163801683.

Adding to 22144573 its reverse (37544122), we get a palindrome (59688695).

It can be divided in two parts, 2214457 and 3, that added together give a triangular number (2214460 = T₂₁₀₄).

The spelling of 22144573 in words is "twenty-two million, one hundred forty-four thousand, five hundred seventy-three".