33013641 has 4 divisors (see below), whose sum is σ = 44018192. Its totient is φ = 22009092.

The previous prime is 33013639. The next prime is 33013649. The reversal of 33013641 is 14631033.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 33013641 - 2¹ = 33013639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33013649) 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, 5502271 + ... + 5502276.

It is an arithmetic number, because the mean of its divisors is an integer number (11004548).

Almost surely, 2^33013641 is an apocalyptic number.

It is an amenable number.

33013641 is a deficient number, since it is larger than the sum of its proper divisors (11004551).

33013641 is a wasteful number, since it uses less digits than its factorization.

33013641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11004550.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 33013641 is about 5745.7498205195. The cubic root of 33013641 is about 320.7976228465.

Adding to 33013641 its reverse (14631033), we get a palindrome (47644674).

The spelling of 33013641 in words is "thirty-three million, thirteen thousand, six hundred forty-one".