33497421 has 4 divisors (see below), whose sum is σ = 44663232. Its totient is φ = 22331612.

The previous prime is 33497419. The next prime is 33497441. The reversal of 33497421 is 12479433.

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.

It is a cyclic number.

It is not a de Polignac number, because 33497421 - 2¹ = 33497419 is a prime.

It is a super-2 number, since 2×33497421² = 2244154427302482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33497441) 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, 5582901 + ... + 5582906.

It is an arithmetic number, because the mean of its divisors is an integer number (11165808).

Almost surely, 2^33497421 is an apocalyptic number.

It is an amenable number.

33497421 is a deficient number, since it is larger than the sum of its proper divisors (11165811).

33497421 is a wasteful number, since it uses less digits than its factorization.

33497421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11165810.

The product of its digits is 18144, while the sum is 33.

The square root of 33497421 is about 5787.6956554401. The cubic root of 33497421 is about 322.3570137125.

The spelling of 33497421 in words is "thirty-three million, four hundred ninety-seven thousand, four hundred twenty-one".