33223147 has 4 divisors (see below), whose sum is σ = 33422256. Its totient is φ = 33024040.

The previous prime is 33223129. The next prime is 33223159. The reversal of 33223147 is 74132233.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33223147 - 2⁷ = 33223019 is a prime.

It is a super-2 number, since 2×33223147² = 2207554993167218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33223187) 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, 99304 + ... + 99637.

It is an arithmetic number, because the mean of its divisors is an integer number (8355564).

Almost surely, 2^33223147 is an apocalyptic number.

33223147 is a deficient number, since it is larger than the sum of its proper divisors (199109).

33223147 is a wasteful number, since it uses less digits than its factorization.

33223147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199108.

The product of its digits is 3024, while the sum is 25.

The square root of 33223147 is about 5763.9523766249. The cubic root of 33223147 is about 321.4747909644.

The spelling of 33223147 in words is "thirty-three million, two hundred twenty-three thousand, one hundred forty-seven".