33330401 has 4 divisors (see below), whose sum is σ = 35894292. Its totient is φ = 30766512.

The previous prime is 33330373. The next prime is 33330433. The reversal of 33330401 is 10403333.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22572001 + 10758400 = 4751^2 + 3280^2 .

It is a cyclic number.

It is not a de Polignac number, because 33330401 - 2¹⁸ = 33068257 is a prime.

It is a super-2 number, since 2×33330401² = 2221831261641602, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33330401.

It is not an unprimeable number, because it can be changed into a prime (33330901) 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, 1281926 + ... + 1281951.

It is an arithmetic number, because the mean of its divisors is an integer number (8973573).

Almost surely, 2^33330401 is an apocalyptic number.

It is an amenable number.

33330401 is a deficient number, since it is larger than the sum of its proper divisors (2563891).

33330401 is a wasteful number, since it uses less digits than its factorization.

33330401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563890.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 33330401 is about 5773.2487387952. The cubic root of 33330401 is about 321.8203574695.

Adding to 33330401 its reverse (10403333), we get a palindrome (43733734).

The spelling of 33330401 in words is "thirty-three million, three hundred thirty thousand, four hundred one".