33055013 has 4 divisors (see below), whose sum is σ = 33358380. Its totient is φ = 32751648.

The previous prime is 33054947. The next prime is 33055019. The reversal of 33055013 is 31055033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31055033 = 467 ⋅66499.

It can be written as a sum of positive squares in 2 ways, for example, as 12687844 + 20367169 = 3562^2 + 4513^2 .

It is a cyclic number.

It is not a de Polignac number, because 33055013 - 2⁸ = 33054757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33055019) 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, 151520 + ... + 151737.

It is an arithmetic number, because the mean of its divisors is an integer number (8339595).

Almost surely, 2^33055013 is an apocalyptic number.

It is an amenable number.

33055013 is a deficient number, since it is larger than the sum of its proper divisors (303367).

33055013 is a wasteful number, since it uses less digits than its factorization.

33055013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303366.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 33055013 is about 5749.3489196604. The cubic root of 33055013 is about 320.9315725172.

Adding to 33055013 its sum of digits (20), we get a palindrome (33055033).

The spelling of 33055013 in words is "thirty-three million, fifty-five thousand, thirteen".