33555222 has 40 divisors (see below), whose sum is σ = 76953096. Its totient is φ = 10922688.

The previous prime is 33555217. The next prime is 33555241. The reversal of 33555222 is 22255533.

It is a super-2 number, since 2×33555222² = 2251905846938568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4558 + ... + 9374.

Almost surely, 2^33555222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33555222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38476548).

33555222 is an abundant number, since it is smaller than the sum of its proper divisors (43397874).

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

33555222 is a wasteful number, since it uses less digits than its factorization.

33555222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874 (or 4865 counting only the distinct ones).

The product of its digits is 9000, while the sum is 27.

The square root of 33555222 is about 5792.6869413080. The cubic root of 33555222 is about 322.5423200277.

The spelling of 33555222 in words is "thirty-three million, five hundred fifty-five thousand, two hundred twenty-two".