33356945 has 4 divisors (see below), whose sum is σ = 40028340. Its totient is φ = 26685552.

The previous prime is 33356893. The next prime is 33356963. The reversal of 33356945 is 54965333.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54965333 = 863 ⋅63691.

It can be written as a sum of positive squares in 2 ways, for example, as 14961424 + 18395521 = 3868^2 + 4289^2 .

It is a cyclic number.

It is not a de Polignac number, because 33356945 - 2⁸ = 33356689 is a prime.

It is a super-2 number, since 2×33356945² = 2225371559466050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33356899 and 33356908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3335690 + ... + 3335699.

It is an arithmetic number, because the mean of its divisors is an integer number (10007085).

Almost surely, 2^33356945 is an apocalyptic number.

It is an amenable number.

33356945 is a deficient number, since it is larger than the sum of its proper divisors (6671395).

33356945 is an equidigital number, since it uses as much as digits as its factorization.

33356945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671394.

The product of its digits is 145800, while the sum is 38.

The square root of 33356945 is about 5775.5471602265. The cubic root of 33356945 is about 321.9057663116.

The spelling of 33356945 in words is "thirty-three million, three hundred fifty-six thousand, nine hundred forty-five".