33150013 has 4 divisors (see below), whose sum is σ = 35700028. Its totient is φ = 30600000.

The previous prime is 33150011. The next prime is 33150031. The reversal of 33150013 is 31005133.

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 15155449 + 17994564 = 3893^2 + 4242^2 .

It is a cyclic number.

It is not a de Polignac number, because 33150013 - 2¹ = 33150011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33150011) 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, 1274988 + ... + 1275013.

It is an arithmetic number, because the mean of its divisors is an integer number (8925007).

Almost surely, 2^33150013 is an apocalyptic number.

It is an amenable number.

33150013 is a deficient number, since it is larger than the sum of its proper divisors (2550015).

33150013 is a wasteful number, since it uses less digits than its factorization.

33150013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550014.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 33150013 is about 5757.6047971357. The cubic root of 33150013 is about 321.2387305469.

Adding to 33150013 its reverse (31005133), we get a palindrome (64155146).

The spelling of 33150013 in words is "thirty-three million, one hundred fifty thousand, thirteen".