33149401 has 2 divisors, whose sum is σ = 33149402. Its totient is φ = 33149400.

The previous prime is 33149399. The next prime is 33149423. The reversal of 33149401 is 10494133.

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., 31584400 + 1565001 = 5620^2 + 1251^2 .

It is a cyclic number.

It is not a de Polignac number, because 33149401 - 2¹ = 33149399 is a prime.

Together with 33149399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33149461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16574700 + 16574701.

It is an arithmetic number, because the mean of its divisors is an integer number (16574701).

Almost surely, 2^33149401 is an apocalyptic number.

It is an amenable number.

33149401 is a deficient number, since it is larger than the sum of its proper divisors (1).

33149401 is an equidigital number, since it uses as much as digits as its factorization.

33149401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 33149401 is about 5757.5516497900. The cubic root of 33149401 is about 321.2367536817.

The spelling of 33149401 in words is "thirty-three million, one hundred forty-nine thousand, four hundred one".