172485503 has 4 divisors (see below), whose sum is σ = 172738728. Its totient is φ = 172232280.

The previous prime is 172485493. The next prime is 172485539. The reversal of 172485503 is 305584271.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305584271 = 47 ⋅6501793.

It is a cyclic number.

It is not a de Polignac number, because 172485503 - 2²² = 168291199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172485563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125588 + ... + 126953.

It is an arithmetic number, because the mean of its divisors is an integer number (43184682).

Almost surely, 2^172485503 is an apocalyptic number.

172485503 is a deficient number, since it is larger than the sum of its proper divisors (253225).

172485503 is an equidigital number, since it uses as much as digits as its factorization.

172485503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253224.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 172485503 is about 13133.3736336099. The cubic root of 172485503 is about 556.6525460859.

The spelling of 172485503 in words is "one hundred seventy-two million, four hundred eighty-five thousand, five hundred three".