33254021 has 4 divisors (see below), whose sum is σ = 34699872. Its totient is φ = 31808172.

The previous prime is 33254017. The next prime is 33254027. The reversal of 33254021 is 12045233.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12045233 = 2969 ⋅4057.

It is not a de Polignac number, because 33254021 - 2² = 33254017 is a prime.

It is a super-2 number, since 2×33254021² = 2211659825336882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33253984 and 33254002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33254027) 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, 722891 + ... + 722936.

It is an arithmetic number, because the mean of its divisors is an integer number (8674968).

Almost surely, 2^33254021 is an apocalyptic number.

It is an amenable number.

33254021 is a deficient number, since it is larger than the sum of its proper divisors (1445851).

33254021 is a wasteful number, since it uses less digits than its factorization.

33254021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445850.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 33254021 is about 5766.6299517136. The cubic root of 33254021 is about 321.5743414355.

Adding to 33254021 its reverse (12045233), we get a palindrome (45299254).

The spelling of 33254021 in words is "thirty-three million, two hundred fifty-four thousand, twenty-one".