33100145 has 16 divisors (see below), whose sum is σ = 42973392. Its totient is φ = 24330240.

The previous prime is 33100127. The next prime is 33100169. The reversal of 33100145 is 54100133.

It can be written as a sum of positive squares in 8 ways, for example, as 7929856 + 25170289 = 2816^2 + 5017^2 .

It is not a de Polignac number, because 33100145 - 2²² = 28905841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14609 + ... + 16721.

It is an arithmetic number, because the mean of its divisors is an integer number (2685837).

Almost surely, 2^33100145 is an apocalyptic number.

It is an amenable number.

33100145 is a deficient number, since it is larger than the sum of its proper divisors (9873247).

33100145 is a wasteful number, since it uses less digits than its factorization.

33100145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 33100145 is about 5753.2725469944. The cubic root of 33100145 is about 321.0775684931.

Adding to 33100145 its reverse (54100133), we get a palindrome (87200278).

The spelling of 33100145 in words is "thirty-three million, one hundred thousand, one hundred forty-five".