22185554 has 8 divisors (see below), whose sum is σ = 33305520. Its totient is φ = 11083716.

The previous prime is 22185529. The next prime is 22185557. The reversal of 22185554 is 45558122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22185554.

It is not an unprimeable number, because it can be changed into a prime (22185557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884 + ... + 6719.

It is an arithmetic number, because the mean of its divisors is an integer number (4163190).

Almost surely, 2^22185554 is an apocalyptic number.

22185554 is a deficient number, since it is larger than the sum of its proper divisors (11119966).

22185554 is a wasteful number, since it uses less digits than its factorization.

22185554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9064.

The product of its digits is 16000, while the sum is 32.

The square root of 22185554 is about 4710.1543499125. The cubic root of 22185554 is about 280.9895007538.

The spelling of 22185554 in words is "twenty-two million, one hundred eighty-five thousand, five hundred fifty-four".