36417721 has 2 divisors, whose sum is σ = 36417722. Its totient is φ = 36417720.

The previous prime is 36417713. The next prime is 36417739. The reversal of 36417721 is 12771463.

36417721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28772496 + 7645225 = 5364^2 + 2765^2 .

It is a cyclic number.

It is not a de Polignac number, because 36417721 - 2³ = 36417713 is a prime.

It is not a weakly prime, because it can be changed into another prime (36417221) by changing a digit.

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 as a sum of consecutive naturals, namely, 18208860 + 18208861.

It is an arithmetic number, because the mean of its divisors is an integer number (18208861).

Almost surely, 2^36417721 is an apocalyptic number.

It is an amenable number.

36417721 is a deficient number, since it is larger than the sum of its proper divisors (1).

36417721 is an equidigital number, since it uses as much as digits as its factorization.

36417721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 36417721 is about 6034.7096864721. The cubic root of 36417721 is about 331.4649320191.

The spelling of 36417721 in words is "thirty-six million, four hundred seventeen thousand, seven hundred twenty-one".