135500553 has 8 divisors (see below), whose sum is σ = 200741600. Its totient is φ = 90333684.

The previous prime is 135500543. The next prime is 135500569. The reversal of 135500553 is 355005531.

It is not a de Polignac number, because 135500553 - 2⁴ = 135500537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5018539 = 135500553 / (1 + 3 + 5 + 5 + 0 + 0 + 5 + 5 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135500503) 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, 2509243 + ... + 2509296.

It is an arithmetic number, because the mean of its divisors is an integer number (25092700).

Almost surely, 2^135500553 is an apocalyptic number.

It is an amenable number.

135500553 is a deficient number, since it is larger than the sum of its proper divisors (65241047).

135500553 is an equidigital number, since it uses as much as digits as its factorization.

135500553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018548 (or 5018542 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 27.

The square root of 135500553 is about 11640.4704801825. The cubic root of 135500553 is about 513.6260268822.

The spelling of 135500553 in words is "one hundred thirty-five million, five hundred thousand, five hundred fifty-three".