136513 has 4 divisors (see below), whose sum is σ = 147028. Its totient is φ = 126000.

The previous prime is 136511. The next prime is 136519. The reversal of 136513 is 315631.

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 29584 + 106929 = 172^2 + 327^2 .

It is a cyclic number.

It is not a de Polignac number, because 136513 - 2¹ = 136511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5238 + ... + 5263.

It is an arithmetic number, because the mean of its divisors is an integer number (36757).

2¹³⁶⁵¹³ is an apocalyptic number.

136513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

136513 is a deficient number, since it is larger than the sum of its proper divisors (10515).

136513 is a wasteful number, since it uses less digits than its factorization.

136513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10514.

The product of its digits is 270, while the sum is 19.

The square root of 136513 is about 369.4766569081. The cubic root of 136513 is about 51.4902108519.

It can be divided in two parts, 1365 and 13, that added together give a triangular number (1378 = T₅₂).

The spelling of 136513 in words is "one hundred thirty-six thousand, five hundred thirteen".