33381241 has 2 divisors, whose sum is σ = 33381242. Its totient is φ = 33381240.

The previous prime is 33381223. The next prime is 33381263. The reversal of 33381241 is 14218333.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24206400 + 9174841 = 4920^2 + 3029^2 .

It is an emirp because it is prime and its reverse (14218333) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33381241 - 2⁷ = 33381113 is a prime.

It is a super-2 number, since 2×33381241² = 2228614501400162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33381281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16690620 + 16690621.

It is an arithmetic number, because the mean of its divisors is an integer number (16690621).

Almost surely, 2^33381241 is an apocalyptic number.

It is an amenable number.

33381241 is a deficient number, since it is larger than the sum of its proper divisors (1).

33381241 is an equidigital number, since it uses as much as digits as its factorization.

33381241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 33381241 is about 5777.6501278634. The cubic root of 33381241 is about 321.9839022082.

Adding to 33381241 its reverse (14218333), we get a palindrome (47599574).

The spelling of 33381241 in words is "thirty-three million, three hundred eighty-one thousand, two hundred forty-one".