33145933 has 2 divisors, whose sum is σ = 33145934. Its totient is φ = 33145932.

The previous prime is 33145909. The next prime is 33145961. The reversal of 33145933 is 33954133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27846729 + 5299204 = 5277^2 + 2302^2 .

It is a cyclic number.

It is not a de Polignac number, because 33145933 - 2⁹ = 33145421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33145895 and 33145904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33145963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16572966 + 16572967.

It is an arithmetic number, because the mean of its divisors is an integer number (16572967).

Almost surely, 2^33145933 is an apocalyptic number.

It is an amenable number.

33145933 is a deficient number, since it is larger than the sum of its proper divisors (1).

33145933 is an equidigital number, since it uses as much as digits as its factorization.

33145933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 31.

The square root of 33145933 is about 5757.2504722306. The cubic root of 33145933 is about 321.2255509865.

It can be divided in two parts, 331 and 45933, that added together give a palindrome (46264).

The spelling of 33145933 in words is "thirty-three million, one hundred forty-five thousand, nine hundred thirty-three".