22145583 has 8 divisors (see below), whose sum is σ = 31081600. Its totient is φ = 13986648.

The previous prime is 22145569. The next prime is 22145587. The reversal of 22145583 is 38554122.

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

It is not a de Polignac number, because 22145583 - 2⁴ = 22145567 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 22145583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145587) 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, 194203 + ... + 194316.

It is an arithmetic number, because the mean of its divisors is an integer number (3885200).

Almost surely, 2^22145583 is an apocalyptic number.

22145583 is a deficient number, since it is larger than the sum of its proper divisors (8936017).

22145583 is a wasteful number, since it uses less digits than its factorization.

22145583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388541.

The product of its digits is 9600, while the sum is 30.

The square root of 22145583 is about 4705.9093701430. The cubic root of 22145583 is about 280.8206493893.

The spelling of 22145583 in words is "twenty-two million, one hundred forty-five thousand, five hundred eighty-three".