135247555 has 4 divisors (see below), whose sum is σ = 162297072. Its totient is φ = 108198040.

The previous prime is 135247537. The next prime is 135247571. The reversal of 135247555 is 555742531.

135247555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 135247555 - 2¹¹ = 135245507 is a prime.

It is a super-2 number, since 2×135247555² = 36583802266956050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13524751 + ... + 13524760.

It is an arithmetic number, because the mean of its divisors is an integer number (40574268).

Almost surely, 2^135247555 is an apocalyptic number.

135247555 is a deficient number, since it is larger than the sum of its proper divisors (27049517).

135247555 is an equidigital number, since it uses as much as digits as its factorization.

135247555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27049516.

The product of its digits is 105000, while the sum is 37.

The square root of 135247555 is about 11629.5982303775. The cubic root of 135247555 is about 513.3061577881.

The spelling of 135247555 in words is "one hundred thirty-five million, two hundred forty-seven thousand, five hundred fifty-five".