36558121 has 2 divisors, whose sum is σ = 36558122. Its totient is φ = 36558120.

The previous prime is 36558073. The next prime is 36558139. The reversal of 36558121 is 12185563.

36558121 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., 28355625 + 8202496 = 5325^2 + 2864^2 .

It is a cyclic number.

It is not a de Polignac number, because 36558121 - 2¹¹ = 36556073 is a prime.

It is a super-2 number, since 2×36558121² = 2672992422101282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36558191) 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, 18279060 + 18279061.

It is an arithmetic number, because the mean of its divisors is an integer number (18279061).

Almost surely, 2^36558121 is an apocalyptic number.

It is an amenable number.

36558121 is a deficient number, since it is larger than the sum of its proper divisors (1).

36558121 is an equidigital number, since it uses as much as digits as its factorization.

36558121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

The square root of 36558121 is about 6046.3312016462. The cubic root of 36558121 is about 331.8903476126.

The spelling of 36558121 in words is "thirty-six million, five hundred fifty-eight thousand, one hundred twenty-one".