36500581 has 8 divisors (see below), whose sum is σ = 41620824. Its totient is φ = 31710720.

The previous prime is 36500543. The next prime is 36500599. The reversal of 36500581 is 18500563.

36500581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 320356 + 36180225 = 566^2 + 6015^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36500581 - 2¹¹ = 36498533 is a prime.

It is a super-2 number, since 2×36500581² = 2664584826675122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36500281) 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 in 7 ways as a sum of consecutive naturals, for example, 82360 + ... + 82801.

It is an arithmetic number, because the mean of its divisors is an integer number (5202603).

Almost surely, 2^36500581 is an apocalyptic number.

It is an amenable number.

36500581 is a deficient number, since it is larger than the sum of its proper divisors (5120243).

36500581 is a wasteful number, since it uses less digits than its factorization.

36500581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165191.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 36500581 is about 6041.5710705081. The cubic root of 36500581 is about 331.7161318893.

The spelling of 36500581 in words is "thirty-six million, five hundred thousand, five hundred eighty-one".