135953553 has 8 divisors (see below), whose sum is σ = 181526400. Its totient is φ = 90508208.

The previous prime is 135953527. The next prime is 135953557. The reversal of 135953553 is 355359531.

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 135953553 - 2¹⁷ = 135822481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135953557) 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, 29358 + ... + 33671.

It is an arithmetic number, because the mean of its divisors is an integer number (22690800).

Almost surely, 2^135953553 is an apocalyptic number.

It is an amenable number.

135953553 is a deficient number, since it is larger than the sum of its proper divisors (45572847).

135953553 is an equidigital number, since it uses as much as digits as its factorization.

135953553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63751.

The product of its digits is 151875, while the sum is 39.

The square root of 135953553 is about 11659.9122209389. The cubic root of 135953553 is about 514.1977681736.

The spelling of 135953553 in words is "one hundred thirty-five million, nine hundred fifty-three thousand, five hundred fifty-three".