33081401 has 2 divisors, whose sum is σ = 33081402. Its totient is φ = 33081400.

The previous prime is 33081397. The next prime is 33081403. The reversal of 33081401 is 10418033.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31629376 + 1452025 = 5624^2 + 1205^2 .

It is an emirp because it is prime and its reverse (10418033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33081401 - 2² = 33081397 is a prime.

Together with 33081403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33081403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16540700 + 16540701.

It is an arithmetic number, because the mean of its divisors is an integer number (16540701).

Almost surely, 2^33081401 is an apocalyptic number.

It is an amenable number.

33081401 is a deficient number, since it is larger than the sum of its proper divisors (1).

33081401 is an equidigital number, since it uses as much as digits as its factorization.

33081401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 33081401 is about 5751.6433303883. The cubic root of 33081401 is about 321.0169502862.

Adding to 33081401 its reverse (10418033), we get a palindrome (43499434).

The spelling of 33081401 in words is "thirty-three million, eighty-one thousand, four hundred one".