33145997 has 8 divisors (see below), whose sum is σ = 33913752. Its totient is φ = 32385600.

The previous prime is 33145963. The next prime is 33146011. The reversal of 33145997 is 79954133.

It can be written as a sum of positive squares in 4 ways, for example, as 1042441 + 32103556 = 1021^2 + 5666^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33145997 - 2⁶ = 33145933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33145397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7847 + ... + 11307.

It is an arithmetic number, because the mean of its divisors is an integer number (4239219).

Almost surely, 2^33145997 is an apocalyptic number.

It is an amenable number.

33145997 is a deficient number, since it is larger than the sum of its proper divisors (767755).

33145997 is a wasteful number, since it uses less digits than its factorization.

33145997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679.

The product of its digits is 102060, while the sum is 41.

The square root of 33145997 is about 5757.2560304367. The cubic root of 33145997 is about 321.2257577330.

The spelling of 33145997 in words is "thirty-three million, one hundred forty-five thousand, nine hundred ninety-seven".