22573913 has 4 divisors (see below), whose sum is σ = 22591140. Its totient is φ = 22556688.

The previous prime is 22573883. The next prime is 22573933. The reversal of 22573913 is 31937522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31937522 = 2 ⋅15968761.

It can be written as a sum of positive squares in 2 ways, for example, as 8111104 + 14462809 = 2848^2 + 3803^2 .

It is a cyclic number.

It is not a de Polignac number, because 22573913 - 2⁶ = 22573849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22573913.

It is not an unprimeable number, because it can be changed into a prime (22573933) 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, 6470 + ... + 9327.

It is an arithmetic number, because the mean of its divisors is an integer number (5647785).

Almost surely, 2^22573913 is an apocalyptic number.

It is an amenable number.

22573913 is a deficient number, since it is larger than the sum of its proper divisors (17227).

22573913 is a wasteful number, since it uses less digits than its factorization.

22573913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17226.

The product of its digits is 11340, while the sum is 32.

The square root of 22573913 is about 4751.2012165346. The cubic root of 22573913 is about 282.6196032051.

The spelling of 22573913 in words is "twenty-two million, five hundred seventy-three thousand, nine hundred thirteen".