172368485 has 4 divisors (see below), whose sum is σ = 206842188. Its totient is φ = 137894784.

The previous prime is 172368461. The next prime is 172368503. The reversal of 172368485 is 584863271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584863271 = 29 ⋅20167699.

It can be written as a sum of positive squares in 2 ways, for example, as 86731969 + 85636516 = 9313^2 + 9254^2 .

It is a cyclic number.

It is not a de Polignac number, because 172368485 - 2¹⁴ = 172352101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17236844 + ... + 17236853.

It is an arithmetic number, because the mean of its divisors is an integer number (51710547).

Almost surely, 2^172368485 is an apocalyptic number.

It is an amenable number.

172368485 is a deficient number, since it is larger than the sum of its proper divisors (34473703).

172368485 is an equidigital number, since it uses as much as digits as its factorization.

172368485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34473702.

The product of its digits is 322560, while the sum is 44.

The square root of 172368485 is about 13128.9178914334. The cubic root of 172368485 is about 556.5266357871.

The spelling of 172368485 in words is "one hundred seventy-two million, three hundred sixty-eight thousand, four hundred eighty-five".