135555579 has 8 divisors (see below), whose sum is σ = 200823120. Its totient is φ = 90370368.

The previous prime is 135555577. The next prime is 135555587. The reversal of 135555579 is 975555531.

135555579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135555579 - 2¹ = 135555577 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (135555577) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2510262 + ... + 2510315.

It is an arithmetic number, because the mean of its divisors is an integer number (25102890).

Almost surely, 2^135555579 is an apocalyptic number.

135555579 is a deficient number, since it is larger than the sum of its proper divisors (65267541).

135555579 is an equidigital number, since it uses as much as digits as its factorization.

135555579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020586 (or 5020580 counting only the distinct ones).

The product of its digits is 590625, while the sum is 45.

The square root of 135555579 is about 11642.8338045340. The cubic root of 135555579 is about 513.6955443373.

The spelling of 135555579 in words is "one hundred thirty-five million, five hundred fifty-five thousand, five hundred seventy-nine".