172535513 has 4 divisors (see below), whose sum is σ = 172638180. Its totient is φ = 172432848.

The previous prime is 172535507. The next prime is 172535537. The reversal of 172535513 is 315535271.

172535513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84400969 + 88134544 = 9187^2 + 9388^2 .

It is a cyclic number.

It is not a de Polignac number, because 172535513 - 2⁴ = 172535497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172535513.

It is not an unprimeable number, because it can be changed into a prime (172565513) 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, 48770 + ... + 52187.

It is an arithmetic number, because the mean of its divisors is an integer number (43159545).

Almost surely, 2^172535513 is an apocalyptic number.

It is an amenable number.

172535513 is a deficient number, since it is larger than the sum of its proper divisors (102667).

172535513 is a wasteful number, since it uses less digits than its factorization.

172535513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102666.

The product of its digits is 15750, while the sum is 32.

The square root of 172535513 is about 13135.2774237928. The cubic root of 172535513 is about 556.7063390198.

The spelling of 172535513 in words is "one hundred seventy-two million, five hundred thirty-five thousand, five hundred thirteen".