33020137 has 4 divisors (see below), whose sum is σ = 34962516. Its totient is φ = 31077760.

The previous prime is 33020123. The next prime is 33020153. The reversal of 33020137 is 73102033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73102033 = 6037 ⋅12109.

It can be written as a sum of positive squares in 2 ways, for example, as 15872256 + 17147881 = 3984^2 + 4141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33020137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33020107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971164 + ... + 971197.

It is an arithmetic number, because the mean of its divisors is an integer number (8740629).

Almost surely, 2^33020137 is an apocalyptic number.

It is an amenable number.

33020137 is a deficient number, since it is larger than the sum of its proper divisors (1942379).

33020137 is a wasteful number, since it uses less digits than its factorization.

33020137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942378.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 33020137 is about 5746.3150801187. The cubic root of 33020137 is about 320.8186622777.

The spelling of 33020137 in words is "thirty-three million, twenty thousand, one hundred thirty-seven".