135513571 has 4 divisors (see below), whose sum is σ = 135591192. Its totient is φ = 135435952.

The previous prime is 135513517. The next prime is 135513583. The reversal of 135513571 is 175315531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135513571 - 2¹³ = 135505379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135513271) 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 3 ways as a sum of consecutive naturals, for example, 36130 + ... + 39703.

It is an arithmetic number, because the mean of its divisors is an integer number (33897798).

Almost surely, 2^135513571 is an apocalyptic number.

135513571 is a deficient number, since it is larger than the sum of its proper divisors (77621).

135513571 is an equidigital number, since it uses as much as digits as its factorization.

135513571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77620.

The product of its digits is 7875, while the sum is 31.

The square root of 135513571 is about 11641.0296365914. The cubic root of 135513571 is about 513.6424749565.

The spelling of 135513571 in words is "one hundred thirty-five million, five hundred thirteen thousand, five hundred seventy-one".