172316516 has 12 divisors (see below), whose sum is σ = 302519532. Its totient is φ = 85882368.

The previous prime is 172316513. The next prime is 172316527. The reversal of 172316516 is 615613271.

It can be written as a sum of positive squares in 2 ways, for example, as 71233600 + 101082916 = 8440^2 + 10054^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (172316513) 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, 67565 + ... + 70068.

It is an arithmetic number, because the mean of its divisors is an integer number (25209961).

Almost surely, 2^172316516 is an apocalyptic number.

It is an amenable number.

172316516 is a deficient number, since it is larger than the sum of its proper divisors (130203016).

172316516 is a wasteful number, since it uses less digits than its factorization.

172316516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137950 (or 137948 counting only the distinct ones).

The product of its digits is 7560, while the sum is 32.

The square root of 172316516 is about 13126.9385615992. The cubic root of 172316516 is about 556.4706993440.

Adding to 172316516 its reverse (615613271), we get a palindrome (787929787).

The spelling of 172316516 in words is "one hundred seventy-two million, three hundred sixteen thousand, five hundred sixteen".