36514781 has 2 divisors, whose sum is σ = 36514782. Its totient is φ = 36514780.

The previous prime is 36514769. The next prime is 36514801. The reversal of 36514781 is 18741563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36409156 + 105625 = 6034^2 + 325^2 .

It is an emirp because it is prime and its reverse (18741563) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36514781 is a prime.

It is a super-2 number, since 2×36514781² = 2666658462955922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36514081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18257390 + 18257391.

It is an arithmetic number, because the mean of its divisors is an integer number (18257391).

Almost surely, 2^36514781 is an apocalyptic number.

It is an amenable number.

36514781 is a deficient number, since it is larger than the sum of its proper divisors (1).

36514781 is an equidigital number, since it uses as much as digits as its factorization.

36514781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 36514781 is about 6042.7461472413. The cubic root of 36514781 is about 331.7591426966.

The spelling of 36514781 in words is "thirty-six million, five hundred fourteen thousand, seven hundred eighty-one".