135517455 has 56 divisors (see below), whose sum is σ = 258280272. Its totient is φ = 68024448.

The previous prime is 135517451. The next prime is 135517463. The reversal of 135517455 is 554715531.

It is a happy number.

135517455 is a `hidden beast` number, since 135 + 517 + 4 + 5 + 5 = 666.

It is not a de Polignac number, because 135517455 - 2² = 135517451 is a prime.

It is a super-3 number, since 3×135517455³ (a number of 25 digits) contains 333 as substring.

Its product of digits (52500) is a multiple of the sum of its prime divisors (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135517451) by changing a digit.

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 55 ways as a sum of consecutive naturals, for example, 7971607 + ... + 7971623.

Almost surely, 2^135517455 is an apocalyptic number.

135517455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135517455 is a deficient number, since it is larger than the sum of its proper divisors (122762817).

135517455 is an frugal number, since it uses more digits than its factorization.

135517455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61 (or 25 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 135517455 is about 11641.1964591274. The cubic root of 135517455 is about 513.6473821362.

The spelling of 135517455 in words is "one hundred thirty-five million, five hundred seventeen thousand, four hundred fifty-five".