172516983 has 4 divisors (see below), whose sum is σ = 230022648. Its totient is φ = 115011320.

The previous prime is 172516973. The next prime is 172516991. The reversal of 172516983 is 389615271.

172516983 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 is a cyclic number.

It is not a de Polignac number, because 172516983 - 2⁶ = 172516919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172516943) 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, 28752828 + ... + 28752833.

It is an arithmetic number, because the mean of its divisors is an integer number (57505662).

Almost surely, 2^172516983 is an apocalyptic number.

172516983 is a deficient number, since it is larger than the sum of its proper divisors (57505665).

172516983 is an equidigital number, since it uses as much as digits as its factorization.

172516983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57505664.

The product of its digits is 90720, while the sum is 42.

The square root of 172516983 is about 13134.5720524119. The cubic root of 172516983 is about 556.6864085572.

The spelling of 172516983 in words is "one hundred seventy-two million, five hundred sixteen thousand, nine hundred eighty-three".