36221641 has 2 divisors, whose sum is σ = 36221642. Its totient is φ = 36221640.

The previous prime is 36221639. The next prime is 36221677. The reversal of 36221641 is 14612263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32205625 + 4016016 = 5675^2 + 2004^2 .

It is a cyclic number.

It is not a de Polignac number, because 36221641 - 2¹ = 36221639 is a prime.

Together with 36221639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (36221621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18110820 + 18110821.

It is an arithmetic number, because the mean of its divisors is an integer number (18110821).

Almost surely, 2^36221641 is an apocalyptic number.

It is an amenable number.

36221641 is a deficient number, since it is larger than the sum of its proper divisors (1).

36221641 is an equidigital number, since it uses as much as digits as its factorization.

36221641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 36221641 is about 6018.4417418465. The cubic root of 36221641 is about 330.8689708741.

The spelling of 36221641 in words is "thirty-six million, two hundred twenty-one thousand, six hundred forty-one".