136523454 has 16 divisors (see below), whose sum is σ = 273358848. Its totient is φ = 45455832.

The previous prime is 136523441. The next prime is 136523459. The reversal of 136523454 is 454325631.

136523454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136523459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7102 + ... + 17985.

It is an arithmetic number, because the mean of its divisors is an integer number (17084928).

Almost surely, 2^136523454 is an apocalyptic number.

136523454 is an abundant number, since it is smaller than the sum of its proper divisors (136835394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136523454 is a wasteful number, since it uses less digits than its factorization.

136523454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25999.

The product of its digits is 43200, while the sum is 33.

The square root of 136523454 is about 11684.3251409741. The cubic root of 136523454 is about 514.9152517096.

The spelling of 136523454 in words is "one hundred thirty-six million, five hundred twenty-three thousand, four hundred fifty-four".