36154721 has 2 divisors, whose sum is σ = 36154722. Its totient is φ = 36154720.

The previous prime is 36154709. The next prime is 36154747. The reversal of 36154721 is 12745163.

36154721 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., 23658496 + 12496225 = 4864^2 + 3535^2 .

It is an emirp because it is prime and its reverse (12745163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36154721 - 2¹⁴ = 36138337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (36154771) 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, 18077360 + 18077361.

It is an arithmetic number, because the mean of its divisors is an integer number (18077361).

Almost surely, 2^36154721 is an apocalyptic number.

It is an amenable number.

36154721 is a deficient number, since it is larger than the sum of its proper divisors (1).

36154721 is an equidigital number, since it uses as much as digits as its factorization.

36154721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 36154721 is about 6012.8795930070. The cubic root of 36154721 is about 330.6650835416.

Adding to 36154721 its reverse (12745163), we get a palindrome (48899884).

The spelling of 36154721 in words is "thirty-six million, one hundred fifty-four thousand, seven hundred twenty-one".