36355581 has 16 divisors (see below), whose sum is σ = 55008000. Its totient is φ = 23720544.

The previous prime is 36355567. The next prime is 36355609. The reversal of 36355581 is 18555363.

It is not a de Polignac number, because 36355581 - 2⁷ = 36355453 is a prime.

It is a super-2 number, since 2×36355581² = 2643456539695122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36355541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13056 + ... + 15593.

It is an arithmetic number, because the mean of its divisors is an integer number (3438000).

Almost surely, 2^36355581 is an apocalyptic number.

It is an amenable number.

36355581 is a deficient number, since it is larger than the sum of its proper divisors (18652419).

36355581 is a wasteful number, since it uses less digits than its factorization.

36355581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28705 (or 28699 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 36355581 is about 6029.5589390933. The cubic root of 36355581 is about 331.2762971409.

It can be divided in two parts, 3635 and 5581, that added together give a square (9216 = 96²).

The spelling of 36355581 in words is "thirty-six million, three hundred fifty-five thousand, five hundred eighty-one".