136162561 has 4 divisors (see below), whose sum is σ = 136189872. Its totient is φ = 136135252.

The previous prime is 136162541. The next prime is 136162567. The reversal of 136162561 is 165261631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136162561 - 2¹¹ = 136160513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136162567) 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, 3811 + ... + 16936.

It is an arithmetic number, because the mean of its divisors is an integer number (34047468).

Almost surely, 2^136162561 is an apocalyptic number.

It is an amenable number.

136162561 is a deficient number, since it is larger than the sum of its proper divisors (27311).

136162561 is an equidigital number, since it uses as much as digits as its factorization.

136162561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27310.

The product of its digits is 6480, while the sum is 31.

The square root of 136162561 is about 11668.8714535725. The cubic root of 136162561 is about 514.4611336590.

The spelling of 136162561 in words is "one hundred thirty-six million, one hundred sixty-two thousand, five hundred sixty-one".