135531455 has 8 divisors (see below), whose sum is σ = 162712800. Its totient is φ = 108375136.

The previous prime is 135531449. The next prime is 135531457. The reversal of 135531455 is 554135531.

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 135531455 - 2⁴ = 135531439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135531457) 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 7 ways as a sum of consecutive naturals, for example, 9086 + ... + 18804.

It is an arithmetic number, because the mean of its divisors is an integer number (20339100).

Almost surely, 2^135531455 is an apocalyptic number.

135531455 is a deficient number, since it is larger than the sum of its proper divisors (27181345).

135531455 is an equidigital number, since it uses as much as digits as its factorization.

135531455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12513.

The product of its digits is 22500, while the sum is 32.

The square root of 135531455 is about 11641.7977563605. The cubic root of 135531455 is about 513.6650694413.

Adding to 135531455 its reverse (554135531), we get a palindrome (689666986).

The spelling of 135531455 in words is "one hundred thirty-five million, five hundred thirty-one thousand, four hundred fifty-five".