36556081 has 4 divisors (see below), whose sum is σ = 36568692. Its totient is φ = 36543472.

The previous prime is 36556073. The next prime is 36556087. The reversal of 36556081 is 18065563.

36556081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18065563 = 1487 ⋅12149.

It can be written as a sum of positive squares in 2 ways, for example, as 5363856 + 31192225 = 2316^2 + 5585^2 .

It is a cyclic number.

It is not a de Polignac number, because 36556081 - 2³ = 36556073 is a prime.

It is a super-2 number, since 2×36556081² = 2672694116157122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36556087) 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 3 ways as a sum of consecutive naturals, for example, 471 + ... + 8563.

It is an arithmetic number, because the mean of its divisors is an integer number (9142173).

Almost surely, 2^36556081 is an apocalyptic number.

It is an amenable number.

36556081 is a deficient number, since it is larger than the sum of its proper divisors (12611).

36556081 is an equidigital number, since it uses as much as digits as its factorization.

36556081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12610.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 36556081 is about 6046.1625019511. The cubic root of 36556081 is about 331.8841741653.

It can be divided in two parts, 365560 and 81, that multiplied together give a triangular number (29610360 = T₇₆₉₅).

The spelling of 36556081 in words is "thirty-six million, five hundred fifty-six thousand, eighty-one".