172470803 has 2 divisors, whose sum is σ = 172470804. Its totient is φ = 172470802.

The previous prime is 172470799. The next prime is 172470821. The reversal of 172470803 is 308074271.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (308074271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172470803 - 2² = 172470799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172470803.

It is not a weakly prime, because it can be changed into another prime (172470833) 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 as a sum of consecutive naturals, namely, 86235401 + 86235402.

It is an arithmetic number, because the mean of its divisors is an integer number (86235402).

Almost surely, 2^172470803 is an apocalyptic number.

172470803 is a deficient number, since it is larger than the sum of its proper divisors (1).

172470803 is an equidigital number, since it uses as much as digits as its factorization.

172470803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 172470803 is about 13132.8139787328. The cubic root of 172470803 is about 556.6367321483.

It can be divided in two parts, 1724 and 70803, that added together give a palindrome (72527).

The spelling of 172470803 in words is "one hundred seventy-two million, four hundred seventy thousand, eight hundred three".