136515745 has 4 divisors (see below), whose sum is σ = 163818900. Its totient is φ = 109212592.

The previous prime is 136515727. The next prime is 136515751. The reversal of 136515745 is 547515631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547515631 = 13 ⋅42116587.

It can be written as a sum of positive squares in 2 ways, for example, as 103245921 + 33269824 = 10161^2 + 5768^2 .

It is a cyclic number.

It is not a de Polignac number, because 136515745 - 2¹⁷ = 136384673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13651570 + ... + 13651579.

It is an arithmetic number, because the mean of its divisors is an integer number (40954725).

Almost surely, 2^136515745 is an apocalyptic number.

It is an amenable number.

136515745 is a deficient number, since it is larger than the sum of its proper divisors (27303155).

136515745 is an equidigital number, since it uses as much as digits as its factorization.

136515745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27303154.

The product of its digits is 63000, while the sum is 37.

The square root of 136515745 is about 11683.9952499134. The cubic root of 136515745 is about 514.9055597085.

The spelling of 136515745 in words is "one hundred thirty-six million, five hundred fifteen thousand, seven hundred forty-five".