135511556 has 12 divisors (see below), whose sum is σ = 251095068. Its totient is φ = 63770112.

The previous prime is 135511549. The next prime is 135511627. The reversal of 135511556 is 655115531.

It can be written as a sum of positive squares in 2 ways, for example, as 93702400 + 41809156 = 9680^2 + 6466^2 .

It is a super-2 number, since 2×135511556² = 36726763619082272, which contains 22 as substring.

It is an unprimeable number.

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, 996341 + ... + 996476.

It is an arithmetic number, because the mean of its divisors is an integer number (20924589).

Almost surely, 2^135511556 is an apocalyptic number.

It is an amenable number.

135511556 is a deficient number, since it is larger than the sum of its proper divisors (115583512).

135511556 is a wasteful number, since it uses less digits than its factorization.

135511556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992838 (or 1992836 counting only the distinct ones).

The product of its digits is 11250, while the sum is 32.

The square root of 135511556 is about 11640.9430889426. The cubic root of 135511556 is about 513.6399290991.

The spelling of 135511556 in words is "one hundred thirty-five million, five hundred eleven thousand, five hundred fifty-six".