135564371 has 4 divisors (see below), whose sum is σ = 135643200. Its totient is φ = 135485544.

The previous prime is 135564367. The next prime is 135564379. The reversal of 135564371 is 173465531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 173465531 = 2131 ⋅81401.

It is a cyclic number.

It is not a de Polignac number, because 135564371 - 2² = 135564367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135564379) 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, 36776 + ... + 40293.

It is an arithmetic number, because the mean of its divisors is an integer number (33910800).

Almost surely, 2^135564371 is an apocalyptic number.

135564371 is a deficient number, since it is larger than the sum of its proper divisors (78829).

135564371 is an equidigital number, since it uses as much as digits as its factorization.

135564371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78828.

The product of its digits is 37800, while the sum is 35.

The square root of 135564371 is about 11643.2113697210. The cubic root of 135564371 is about 513.7066500245.

The spelling of 135564371 in words is "one hundred thirty-five million, five hundred sixty-four thousand, three hundred seventy-one".