33417421 has 4 divisors (see below), whose sum is σ = 33429472. Its totient is φ = 33405372.

The previous prime is 33417379. The next prime is 33417457. The reversal of 33417421 is 12471433.

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.

It is a cyclic number.

It is not a de Polignac number, because 33417421 - 2⁹ = 33416909 is a prime.

It is a super-2 number, since 2×33417421² = 2233448052582482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33417481) 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, 466 + ... + 8188.

It is an arithmetic number, because the mean of its divisors is an integer number (8357368).

Almost surely, 2^33417421 is an apocalyptic number.

It is an amenable number.

33417421 is a deficient number, since it is larger than the sum of its proper divisors (12051).

33417421 is an equidigital number, since it uses as much as digits as its factorization.

33417421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12050.

The product of its digits is 2016, while the sum is 25.

The square root of 33417421 is about 5780.7803106501. The cubic root of 33417421 is about 322.1001867947.

Adding to 33417421 its reverse (12471433), we get a palindrome (45888854).

The spelling of 33417421 in words is "thirty-three million, four hundred seventeen thousand, four hundred twenty-one".