33445945 has 12 divisors (see below), whose sum is σ = 43461036. Its totient is φ = 24697920.

The previous prime is 33445943. The next prime is 33445949. The reversal of 33445945 is 54954433.

It can be written as a sum of positive squares in 6 ways, for example, as 4372281 + 29073664 = 2091^2 + 5392^2 .

It is not a de Polignac number, because 33445945 - 2¹ = 33445943 is a prime.

It is a super-2 number, since 2×33445945² = 2237262473886050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33445943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18946 + ... + 20635.

It is an arithmetic number, because the mean of its divisors is an integer number (3621753).

Almost surely, 2^33445945 is an apocalyptic number.

It is an amenable number.

33445945 is a deficient number, since it is larger than the sum of its proper divisors (10015091).

33445945 is a wasteful number, since it uses less digits than its factorization.

33445945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39612 (or 39599 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 33445945 is about 5783.2469253872. The cubic root of 33445945 is about 322.1918054038.

The spelling of 33445945 in words is "thirty-three million, four hundred forty-five thousand, nine hundred forty-five".