135557493 has 8 divisors (see below), whose sum is σ = 181156800. Its totient is φ = 90164928.

The previous prime is 135557467. The next prime is 135557503. The reversal of 135557493 is 394755531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135557493 - 2¹³ = 135549301 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135557593) 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, 50148 + ... + 52781.

It is an arithmetic number, because the mean of its divisors is an integer number (22644600).

Almost surely, 2^135557493 is an apocalyptic number.

It is an amenable number.

135557493 is a deficient number, since it is larger than the sum of its proper divisors (45599307).

135557493 is a wasteful number, since it uses less digits than its factorization.

135557493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103371.

The product of its digits is 283500, while the sum is 42.

The square root of 135557493 is about 11642.9160007277. The cubic root of 135557493 is about 513.6979620631.

The spelling of 135557493 in words is "one hundred thirty-five million, five hundred fifty-seven thousand, four hundred ninety-three".