135553917 has 16 divisors (see below), whose sum is σ = 193006080. Its totient is φ = 84436800.

The previous prime is 135553889. The next prime is 135553921. The reversal of 135553917 is 719355531.

It is not a de Polignac number, because 135553917 - 2¹¹ = 135551869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135553987) 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 15 ways as a sum of consecutive naturals, for example, 22434 + ... + 27827.

It is an arithmetic number, because the mean of its divisors is an integer number (12062880).

Almost surely, 2^135553917 is an apocalyptic number.

It is an amenable number.

135553917 is a deficient number, since it is larger than the sum of its proper divisors (57452163).

135553917 is a wasteful number, since it uses less digits than its factorization.

135553917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50324.

The product of its digits is 70875, while the sum is 39.

The square root of 135553917 is about 11642.7624299390. The cubic root of 135553917 is about 513.6934449144.

The spelling of 135553917 in words is "one hundred thirty-five million, five hundred fifty-three thousand, nine hundred seventeen".