33254721 has 12 divisors (see below), whose sum is σ = 48127248. Its totient is φ = 22127064.

The previous prime is 33254719. The next prime is 33254747. The reversal of 33254721 is 12745233.

It is not a de Polignac number, because 33254721 - 2¹ = 33254719 is a prime.

It is a super-2 number, since 2×33254721² = 2211752937575682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33253721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1786 + ... + 8348.

It is an arithmetic number, because the mean of its divisors is an integer number (4010604).

Almost surely, 2^33254721 is an apocalyptic number.

It is an amenable number.

33254721 is a deficient number, since it is larger than the sum of its proper divisors (14872527).

33254721 is a wasteful number, since it uses less digits than its factorization.

33254721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7132 (or 7129 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 33254721 is about 5766.6906454222. The cubic root of 33254721 is about 321.5765978089.

Adding to 33254721 its reverse (12745233), we get a palindrome (45999954).

The spelling of 33254721 in words is "thirty-three million, two hundred fifty-four thousand, seven hundred twenty-one".