36081557 has 2 divisors, whose sum is σ = 36081558. Its totient is φ = 36081556.

The previous prime is 36081547. The next prime is 36081559. The reversal of 36081557 is 75518063.

36081557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26894596 + 9186961 = 5186^2 + 3031^2 .

It is a cyclic number.

It is not a de Polignac number, because 36081557 - 2⁸ = 36081301 is a prime.

Together with 36081559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36081559) 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 as a sum of consecutive naturals, namely, 18040778 + 18040779.

It is an arithmetic number, because the mean of its divisors is an integer number (18040779).

Almost surely, 2^36081557 is an apocalyptic number.

It is an amenable number.

36081557 is a deficient number, since it is larger than the sum of its proper divisors (1).

36081557 is an equidigital number, since it uses as much as digits as its factorization.

36081557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 36081557 is about 6006.7925717474. The cubic root of 36081557 is about 330.4418843116.

The spelling of 36081557 in words is "thirty-six million, eighty-one thousand, five hundred fifty-seven".