33164521 has 8 divisors (see below), whose sum is σ = 35872200. Its totient is φ = 30479232.

The previous prime is 33164503. The next prime is 33164539. The reversal of 33164521 is 12546133.

It is an interprime number because it is at equal distance from previous prime (33164503) and next prime (33164539).

It can be written as a sum of positive squares in 4 ways, for example, as 1860496 + 31304025 = 1364^2 + 5595^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33164521 - 2⁵ = 33164489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33164581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2446 + ... + 8503.

It is an arithmetic number, because the mean of its divisors is an integer number (4484025).

Almost surely, 2^33164521 is an apocalyptic number.

It is an amenable number.

33164521 is a deficient number, since it is larger than the sum of its proper divisors (2707679).

33164521 is a wasteful number, since it uses less digits than its factorization.

33164521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11195.

The product of its digits is 2160, while the sum is 25.

The square root of 33164521 is about 5758.8645582267. The cubic root of 33164521 is about 321.2855867555.

The spelling of 33164521 in words is "thirty-three million, one hundred sixty-four thousand, five hundred twenty-one".