33252251 has 4 divisors (see below), whose sum is σ = 33285000. Its totient is φ = 33219504.

The previous prime is 33252239. The next prime is 33252313. The reversal of 33252251 is 15225233.

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 33252251 - 2¹⁰ = 33251227 is a prime.

It is a super-2 number, since 2×33252251² = 2211424393134002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33252151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14801 + ... + 16898.

It is an arithmetic number, because the mean of its divisors is an integer number (8321250).

Almost surely, 2^33252251 is an apocalyptic number.

33252251 is a deficient number, since it is larger than the sum of its proper divisors (32749).

33252251 is a wasteful number, since it uses less digits than its factorization.

33252251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32748.

The product of its digits is 1800, while the sum is 23.

The square root of 33252251 is about 5766.4764804862. The cubic root of 33252251 is about 321.5686358931.

Adding to 33252251 its reverse (15225233), we get a palindrome (48477484).

The spelling of 33252251 in words is "thirty-three million, two hundred fifty-two thousand, two hundred fifty-one".