135454181 has 4 divisors (see below), whose sum is σ = 143422092. Its totient is φ = 127486272.

The previous prime is 135454177. The next prime is 135454183. The reversal of 135454181 is 181454531.

135454181 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, and also an emirpimes, since its reverse is a distinct semiprime: 181454531 = 331 ⋅548201.

It can be written as a sum of positive squares in 2 ways, for example, as 58277956 + 77176225 = 7634^2 + 8785^2 .

It is a cyclic number.

It is not a de Polignac number, because 135454181 - 2² = 135454177 is a prime.

It is a super-2 number, since 2×135454181² = 36695670300761522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135454183) 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, 3983930 + ... + 3983963.

It is an arithmetic number, because the mean of its divisors is an integer number (35855523).

Almost surely, 2^135454181 is an apocalyptic number.

It is an amenable number.

135454181 is a deficient number, since it is larger than the sum of its proper divisors (7967911).

135454181 is an equidigital number, since it uses as much as digits as its factorization.

135454181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7967910.

The product of its digits is 9600, while the sum is 32.

The square root of 135454181 is about 11638.4784658477. The cubic root of 135454181 is about 513.5674278995.

The spelling of 135454181 in words is "one hundred thirty-five million, four hundred fifty-four thousand, one hundred eighty-one".