36145581 has 32 divisors (see below), whose sum is σ = 53760000. Its totient is φ = 21498048.

The previous prime is 36145579. The next prime is 36145591. The reversal of 36145581 is 18554163.

36145581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36145581 - 2¹ = 36145579 is a prime.

It is a super-2 number, since 2×36145581² = 2613006051655122, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36145511) 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 31 ways as a sum of consecutive naturals, for example, 103395 + ... + 103743.

It is an arithmetic number, because the mean of its divisors is an integer number (1680000).

Almost surely, 2^36145581 is an apocalyptic number.

It is an amenable number.

36145581 is a deficient number, since it is larger than the sum of its proper divisors (17614419).

36145581 is a wasteful number, since it uses less digits than its factorization.

36145581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its digits is 14400, while the sum is 33.

The square root of 36145581 is about 6012.1195097902. The cubic root of 36145581 is about 330.6372168851.

The spelling of 36145581 in words is "thirty-six million, one hundred forty-five thousand, five hundred eighty-one".