22553643 has 8 divisors (see below), whose sum is σ = 34367488. Its totient is φ = 12887784.

The previous prime is 22553623. The next prime is 22553651. The reversal of 22553643 is 34635522.

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

It is not a de Polignac number, because 22553643 - 2¹⁰ = 22552619 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 22553643.

It is not an unprimeable number, because it can be changed into a prime (22553623) 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, 536971 + ... + 537012.

It is an arithmetic number, because the mean of its divisors is an integer number (4295936).

Almost surely, 2^22553643 is an apocalyptic number.

22553643 is a deficient number, since it is larger than the sum of its proper divisors (11813845).

22553643 is a wasteful number, since it uses less digits than its factorization.

22553643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073993.

The product of its digits is 21600, while the sum is 30.

The square root of 22553643 is about 4749.0675926965. The cubic root of 22553643 is about 282.5349861387.

The spelling of 22553643 in words is "twenty-two million, five hundred fifty-three thousand, six hundred forty-three".