33144401 has 4 divisors (see below), whose sum is σ = 33516900. Its totient is φ = 32771904.

The previous prime is 33144367. The next prime is 33144413. The reversal of 33144401 is 10444133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10444133 = 7 ⋅1492019.

It can be written as a sum of positive squares in 2 ways, for example, as 1795600 + 31348801 = 1340^2 + 5599^2 .

It is a cyclic number.

It is not a de Polignac number, because 33144401 - 2¹⁰ = 33143377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33144481) 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, 186116 + ... + 186293.

It is an arithmetic number, because the mean of its divisors is an integer number (8379225).

Almost surely, 2^33144401 is an apocalyptic number.

It is an amenable number.

33144401 is a deficient number, since it is larger than the sum of its proper divisors (372499).

33144401 is an equidigital number, since it uses as much as digits as its factorization.

33144401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372498.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 33144401 is about 5757.1174210711. The cubic root of 33144401 is about 321.2206019115.

Adding to 33144401 its reverse (10444133), we get a palindrome (43588534).

The spelling of 33144401 in words is "thirty-three million, one hundred forty-four thousand, four hundred one".