135579775 has 6 divisors (see below), whose sum is σ = 168118952. Its totient is φ = 108463800.

The previous prime is 135579767. The next prime is 135579799. The reversal of 135579775 is 577975531.

It is a happy number.

It is not a de Polignac number, because 135579775 - 2³ = 135579767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2711571 + ... + 2711620.

Almost surely, 2^135579775 is an apocalyptic number.

135579775 is a deficient number, since it is larger than the sum of its proper divisors (32539177).

135579775 is an equidigital number, since it uses as much as digits as its factorization.

135579775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5423201 (or 5423196 counting only the distinct ones).

The product of its digits is 1157625, while the sum is 49.

The square root of 135579775 is about 11643.8728522773. The cubic root of 135579775 is about 513.7261065565.

It can be divided in two parts, 13557 and 9775, that added together give a palindrome (23332).

The spelling of 135579775 in words is "one hundred thirty-five million, five hundred seventy-nine thousand, seven hundred seventy-five".