136805451 has 4 divisors (see below), whose sum is σ = 182407272. Its totient is φ = 91203632.

The previous prime is 136805429. The next prime is 136805521. The reversal of 136805451 is 154508631.

136805451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136805451 - 2⁵ = 136805419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136805401) 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, 22800906 + ... + 22800911.

It is an arithmetic number, because the mean of its divisors is an integer number (45601818).

Almost surely, 2^136805451 is an apocalyptic number.

136805451 is a deficient number, since it is larger than the sum of its proper divisors (45601821).

136805451 is an equidigital number, since it uses as much as digits as its factorization.

136805451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45601820.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 136805451 is about 11696.3862367827. The cubic root of 136805451 is about 515.2695368536.

The spelling of 136805451 in words is "one hundred thirty-six million, eight hundred five thousand, four hundred fifty-one".