36888221 has 2 divisors, whose sum is σ = 36888222. Its totient is φ = 36888220.

The previous prime is 36888211. The next prime is 36888277. The reversal of 36888221 is 12288863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35868121 + 1020100 = 5989^2 + 1010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36888221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36888211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18444110 + 18444111.

It is an arithmetic number, because the mean of its divisors is an integer number (18444111).

Almost surely, 2^36888221 is an apocalyptic number.

It is an amenable number.

36888221 is a deficient number, since it is larger than the sum of its proper divisors (1).

36888221 is an equidigital number, since it uses as much as digits as its factorization.

36888221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 38.

The square root of 36888221 is about 6073.5674031001. The cubic root of 36888221 is about 332.8862859361.

The spelling of 36888221 in words is "thirty-six million, eight hundred eighty-eight thousand, two hundred twenty-one".