135553657 has 8 divisors (see below), whose sum is σ = 143488800. Its totient is φ = 127698624.

The previous prime is 135553637. The next prime is 135553703. The reversal of 135553657 is 756355531.

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 135553657 - 2¹⁹ = 135029369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135553637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16528 + ... + 23329.

It is an arithmetic number, because the mean of its divisors is an integer number (17936100).

Almost surely, 2^135553657 is an apocalyptic number.

It is an amenable number.

135553657 is a deficient number, since it is larger than the sum of its proper divisors (7935143).

135553657 is a wasteful number, since it uses less digits than its factorization.

135553657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40055.

The product of its digits is 236250, while the sum is 40.

The square root of 135553657 is about 11642.7512641987. The cubic root of 135553657 is about 513.6931164832.

The spelling of 135553657 in words is "one hundred thirty-five million, five hundred fifty-three thousand, six hundred fifty-seven".