135555061 has 8 divisors (see below), whose sum is σ = 139880664. Its totient is φ = 131278080.

The previous prime is 135555053. The next prime is 135555067. The reversal of 135555061 is 160555531.

135555061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2268036 + 133287025 = 1506^2 + 11545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135555061 - 2³ = 135555053 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 (135555067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6450 + ... + 17683.

It is an arithmetic number, because the mean of its divisors is an integer number (17485083).

Almost surely, 2^135555061 is an apocalyptic number.

It is an amenable number.

135555061 is a deficient number, since it is larger than the sum of its proper divisors (4325603).

135555061 is a wasteful number, since it uses less digits than its factorization.

135555061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24311.

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 135555061 is about 11642.8115590694. The cubic root of 135555061 is about 513.6948900064.

The spelling of 135555061 in words is "one hundred thirty-five million, five hundred fifty-five thousand, sixty-one".