33252421 has 4 divisors (see below), whose sum is σ = 33264000. Its totient is φ = 33240844.

The previous prime is 33252419. The next prime is 33252433. The reversal of 33252421 is 12425233.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12425233 = 2897 ⋅4289.

It is a cyclic number.

It is not a de Polignac number, because 33252421 - 2¹ = 33252419 is a prime.

It is a super-2 number, since 2×33252421² = 2211447004722482, 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 = 33252392 and 33252401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33250421) 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, 2130 + ... + 8428.

It is an arithmetic number, because the mean of its divisors is an integer number (8316000).

Almost surely, 2^33252421 is an apocalyptic number.

It is an amenable number.

33252421 is a deficient number, since it is larger than the sum of its proper divisors (11579).

33252421 is an equidigital number, since it uses as much as digits as its factorization.

33252421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11578.

The product of its digits is 1440, while the sum is 22.

The square root of 33252421 is about 5766.4912208379. The cubic root of 33252421 is about 321.5691838918.

Adding to 33252421 its reverse (12425233), we get a palindrome (45677654).

The spelling of 33252421 in words is "thirty-three million, two hundred fifty-two thousand, four hundred twenty-one".