33364521 has 16 divisors (see below), whose sum is σ = 49811520. Its totient is φ = 22070880.

The previous prime is 33364519. The next prime is 33364543. The reversal of 33364521 is 12546333.

It is a happy number.

It is not a de Polignac number, because 33364521 - 2¹ = 33364519 is a prime.

It is a super-2 number, since 2×33364521² = 2226382523118882, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33364561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1180 + ... + 8253.

It is an arithmetic number, because the mean of its divisors is an integer number (3113220).

Almost surely, 2^33364521 is an apocalyptic number.

It is an amenable number.

33364521 is a deficient number, since it is larger than the sum of its proper divisors (16446999).

33364521 is a wasteful number, since it uses less digits than its factorization.

33364521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9573 (or 9567 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 33364521 is about 5776.2029915854. The cubic root of 33364521 is about 321.9301347850.

The spelling of 33364521 in words is "thirty-three million, three hundred sixty-four thousand, five hundred twenty-one".