33018241 has 4 divisors (see below), whose sum is σ = 33058900. Its totient is φ = 32977584.

The previous prime is 33018217. The next prime is 33018253. The reversal of 33018241 is 14281033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14281033 = 13 ⋅1098541.

It can be written as a sum of positive squares in 2 ways, for example, as 25969216 + 7049025 = 5096^2 + 2655^2 .

It is a cyclic number.

It is not a de Polignac number, because 33018241 - 2²¹ = 30921089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33018341) 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, 19086 + ... + 20743.

It is an arithmetic number, because the mean of its divisors is an integer number (8264725).

Almost surely, 2^33018241 is an apocalyptic number.

It is an amenable number.

33018241 is a deficient number, since it is larger than the sum of its proper divisors (40659).

33018241 is an equidigital number, since it uses as much as digits as its factorization.

33018241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40658.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 33018241 is about 5746.1501024599. The cubic root of 33018241 is about 320.8125217437.

Adding to 33018241 its reverse (14281033), we get a palindrome (47299274).

The spelling of 33018241 in words is "thirty-three million, eighteen thousand, two hundred forty-one".