135015541 has 4 divisors (see below), whose sum is σ = 137304000. Its totient is φ = 132727084.

The previous prime is 135015533. The next prime is 135015599. The reversal of 135015541 is 145510531.

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 135015541 - 2³ = 135015533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135015511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1144141 + ... + 1144258.

It is an arithmetic number, because the mean of its divisors is an integer number (34326000).

Almost surely, 2^135015541 is an apocalyptic number.

It is an amenable number.

135015541 is a deficient number, since it is larger than the sum of its proper divisors (2288459).

135015541 is an equidigital number, since it uses as much as digits as its factorization.

135015541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288458.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 135015541 is about 11619.6187975338. The cubic root of 135015541 is about 513.0124682375.

The spelling of 135015541 in words is "one hundred thirty-five million, fifteen thousand, five hundred forty-one".