135012555 has 64 divisors (see below), whose sum is σ = 257385600. Its totient is φ = 66908160.

The previous prime is 135012547. The next prime is 135012569. The reversal of 135012555 is 555210531.

It is not a de Polignac number, because 135012555 - 2³ = 135012547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 203925 + ... + 204585.

It is an arithmetic number, because the mean of its divisors is an integer number (4021650).

Almost surely, 2^135012555 is an apocalyptic number.

135012555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135012555 is a deficient number, since it is larger than the sum of its proper divisors (122373045).

135012555 is a wasteful number, since it uses less digits than its factorization.

135012555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 135012555 is about 11619.4903072381. The cubic root of 135012555 is about 513.0086862864.

The spelling of 135012555 in words is "one hundred thirty-five million, twelve thousand, five hundred fifty-five".