36287561 has 2 divisors, whose sum is σ = 36287562. Its totient is φ = 36287560.

The previous prime is 36287557. The next prime is 36287579. The reversal of 36287561 is 16578263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26584336 + 9703225 = 5156^2 + 3115^2 .

It is a cyclic number.

It is not a de Polignac number, because 36287561 - 2² = 36287557 is a prime.

It is not a weakly prime, because it can be changed into another prime (36287521) 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, 18143780 + 18143781.

It is an arithmetic number, because the mean of its divisors is an integer number (18143781).

Almost surely, 2^36287561 is an apocalyptic number.

It is an amenable number.

36287561 is a deficient number, since it is larger than the sum of its proper divisors (1).

36287561 is an equidigital number, since it uses as much as digits as its factorization.

36287561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 36287561 is about 6023.9157530630. The cubic root of 36287561 is about 331.0695660989.

The spelling of 36287561 in words is "thirty-six million, two hundred eighty-seven thousand, five hundred sixty-one".