33351401 has 2 divisors, whose sum is σ = 33351402. Its totient is φ = 33351400.

The previous prime is 33351397. The next prime is 33351407. The reversal of 33351401 is 10415333.

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., 30791401 + 2560000 = 5549^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 33351401 - 2² = 33351397 is a prime.

It is a super-2 number, since 2×33351401² = 2224631897325602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33351407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16675700 + 16675701.

It is an arithmetic number, because the mean of its divisors is an integer number (16675701).

Almost surely, 2^33351401 is an apocalyptic number.

It is an amenable number.

33351401 is a deficient number, since it is larger than the sum of its proper divisors (1).

33351401 is an equidigital number, since it uses as much as digits as its factorization.

33351401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 33351401 is about 5775.0671857564. The cubic root of 33351401 is about 321.8879315004.

Adding to 33351401 its reverse (10415333), we get a palindrome (43766734).

The spelling of 33351401 in words is "thirty-three million, three hundred fifty-one thousand, four hundred one".