136559945 has 4 divisors (see below), whose sum is σ = 163871940. Its totient is φ = 109247952.

The previous prime is 136559939. The next prime is 136559977. The reversal of 136559945 is 549955631.

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 42237001 + 94322944 = 6499^2 + 9712^2 .

It is a cyclic number.

It is not a de Polignac number, because 136559945 - 2¹⁶ = 136494409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136559945.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13655990 + ... + 13655999.

It is an arithmetic number, because the mean of its divisors is an integer number (40967985).

Almost surely, 2^136559945 is an apocalyptic number.

It is an amenable number.

136559945 is a deficient number, since it is larger than the sum of its proper divisors (27311995).

136559945 is an equidigital number, since it uses as much as digits as its factorization.

136559945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27311994.

The product of its digits is 729000, while the sum is 47.

The square root of 136559945 is about 11685.8865731274. The cubic root of 136559945 is about 514.9611244102.

The spelling of 136559945 in words is "one hundred thirty-six million, five hundred fifty-nine thousand, nine hundred forty-five".