36048581 has 4 divisors (see below), whose sum is σ = 36109164. Its totient is φ = 35988000.

The previous prime is 36048547. The next prime is 36048599. The reversal of 36048581 is 18584063.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18062500 + 17986081 = 4250^2 + 4241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36048581 is a prime.

It is a super-2 number, since 2×36048581² = 2599000384227122, 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 (36048541) 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 in 3 ways as a sum of consecutive naturals, for example, 29390 + ... + 30591.

It is an arithmetic number, because the mean of its divisors is an integer number (9027291).

Almost surely, 2^36048581 is an apocalyptic number.

It is an amenable number.

36048581 is a deficient number, since it is larger than the sum of its proper divisors (60583).

36048581 is an equidigital number, since it uses as much as digits as its factorization.

36048581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60582.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 36048581 is about 6004.0470517810. The cubic root of 36048581 is about 330.3411867645.

The spelling of 36048581 in words is "thirty-six million, forty-eight thousand, five hundred eighty-one".