135021513 has 8 divisors (see below), whose sum is σ = 196394976. Its totient is φ = 81831200.

The previous prime is 135021499. The next prime is 135021521. The reversal of 135021513 is 315120531.

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

It is not a de Polignac number, because 135021513 - 2²² = 130827209 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 135021513.

It is not an unprimeable number, because it can be changed into a prime (135021533) 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, 2045748 + ... + 2045813.

It is an arithmetic number, because the mean of its divisors is an integer number (24549372).

Almost surely, 2^135021513 is an apocalyptic number.

It is an amenable number.

135021513 is a deficient number, since it is larger than the sum of its proper divisors (61373463).

135021513 is a wasteful number, since it uses less digits than its factorization.

135021513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091575.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 135021513 is about 11619.8757738626. The cubic root of 135021513 is about 513.0200319724.

The spelling of 135021513 in words is "one hundred thirty-five million, twenty-one thousand, five hundred thirteen".