135473587 has 4 divisors (see below), whose sum is σ = 140145120. Its totient is φ = 130802056.

The previous prime is 135473581. The next prime is 135473603. The reversal of 135473587 is 785374531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785374531 = 271 ⋅2898061.

It is a cyclic number.

It is not a de Polignac number, because 135473587 - 2³ = 135473579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135473581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2335723 + ... + 2335780.

It is an arithmetic number, because the mean of its divisors is an integer number (35036280).

Almost surely, 2^135473587 is an apocalyptic number.

135473587 is a deficient number, since it is larger than the sum of its proper divisors (4671533).

135473587 is an equidigital number, since it uses as much as digits as its factorization.

135473587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671532.

The product of its digits is 352800, while the sum is 43.

The square root of 135473587 is about 11639.3121360328. The cubic root of 135473587 is about 513.5919523390.

The spelling of 135473587 in words is "one hundred thirty-five million, four hundred seventy-three thousand, five hundred eighty-seven".