135545161 has 4 divisors (see below), whose sum is σ = 135734400. Its totient is φ = 135355924.

The previous prime is 135545147. The next prime is 135545209. The reversal of 135545161 is 161545531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135545161 - 2⁵ = 135545129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135545561) 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, 93541 + ... + 94978.

It is an arithmetic number, because the mean of its divisors is an integer number (33933600).

Almost surely, 2^135545161 is an apocalyptic number.

It is an amenable number.

135545161 is a deficient number, since it is larger than the sum of its proper divisors (189239).

135545161 is an equidigital number, since it uses as much as digits as its factorization.

135545161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189238.

The product of its digits is 9000, while the sum is 31.

The square root of 135545161 is about 11642.3863962677. The cubic root of 135545161 is about 513.6823841332.

The spelling of 135545161 in words is "one hundred thirty-five million, five hundred forty-five thousand, one hundred sixty-one".