36917021 has 2 divisors, whose sum is σ = 36917022. Its totient is φ = 36917020.

The previous prime is 36917011. The next prime is 36917059. The reversal of 36917021 is 12071963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25452025 + 11464996 = 5045^2 + 3386^2 .

It is a cyclic number.

It is not a de Polignac number, because 36917021 - 2²² = 32722717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36917011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18458510 + 18458511.

It is an arithmetic number, because the mean of its divisors is an integer number (18458511).

Almost surely, 2^36917021 is an apocalyptic number.

It is an amenable number.

36917021 is a deficient number, since it is larger than the sum of its proper divisors (1).

36917021 is an equidigital number, since it uses as much as digits as its factorization.

36917021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 36917021 is about 6075.9378699918. The cubic root of 36917021 is about 332.9728956167.

Adding to 36917021 its reverse (12071963), we get a palindrome (48988984).

The spelling of 36917021 in words is "thirty-six million, nine hundred seventeen thousand, twenty-one".