22355556 has 24 divisors (see below), whose sum is σ = 52577280. Its totient is φ = 7392672.

The previous prime is 22355551. The next prime is 22355587. The reversal of 22355556 is 65555322.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22355551) 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, 5811 + ... + 8858.

It is an arithmetic number, because the mean of its divisors is an integer number (2190720).

Almost surely, 2^22355556 is an apocalyptic number.

It is an amenable number.

22355556 is an abundant number, since it is smaller than the sum of its proper divisors (30221724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22355556 is a wasteful number, since it uses less digits than its factorization.

22355556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14803 (or 14801 counting only the distinct ones).

The product of its digits is 45000, while the sum is 33.

The square root of 22355556 is about 4728.1662407322. The cubic root of 22355556 is about 281.7053912344.

The spelling of 22355556 in words is "twenty-two million, three hundred fifty-five thousand, five hundred fifty-six".