33528161 has 4 divisors (see below), whose sum is σ = 33667524. Its totient is φ = 33388800.

The previous prime is 33528151. The next prime is 33528163. The reversal of 33528161 is 16182533.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19088161 + 14440000 = 4369^2 + 3800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33528161 is a prime.

It is a super-2 number, since 2×33528161² = 2248275160083842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33528163) 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, 69320 + ... + 69801.

It is an arithmetic number, because the mean of its divisors is an integer number (8416881).

Almost surely, 2^33528161 is an apocalyptic number.

It is an amenable number.

33528161 is a deficient number, since it is larger than the sum of its proper divisors (139363).

33528161 is a wasteful number, since it uses less digits than its factorization.

33528161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139362.

The product of its digits is 4320, while the sum is 29.

The square root of 33528161 is about 5790.3506802265. The cubic root of 33528161 is about 322.4555907041.

The spelling of 33528161 in words is "thirty-three million, five hundred twenty-eight thousand, one hundred sixty-one".