33381401 has 2 divisors, whose sum is σ = 33381402. Its totient is φ = 33381400.

The previous prime is 33381391. The next prime is 33381427. The reversal of 33381401 is 10418333.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31753225 + 1628176 = 5635^2 + 1276^2 .

It is a cyclic number.

It is not a de Polignac number, because 33381401 - 2¹⁰ = 33380377 is a prime.

It is a super-2 number, since 2×33381401² = 2228635865445602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33384401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16690700 + 16690701.

It is an arithmetic number, because the mean of its divisors is an integer number (16690701).

Almost surely, 2^33381401 is an apocalyptic number.

It is an amenable number.

33381401 is a deficient number, since it is larger than the sum of its proper divisors (1).

33381401 is an equidigital number, since it uses as much as digits as its factorization.

33381401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 33381401 is about 5777.6639743066. The cubic root of 33381401 is about 321.9844166423.

Adding to 33381401 its reverse (10418333), we get a palindrome (43799734).

The spelling of 33381401 in words is "thirty-three million, three hundred eighty-one thousand, four hundred one".