172145063 has 4 divisors (see below), whose sum is σ = 172174200. Its totient is φ = 172115928.

The previous prime is 172144981. The next prime is 172145069. The reversal of 172145063 is 360541271.

172145063 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 172145063 - 2¹⁰ = 172144039 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 (172145069) 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, 2213 + ... + 18686.

It is an arithmetic number, because the mean of its divisors is an integer number (43043550).

Almost surely, 2^172145063 is an apocalyptic number.

172145063 is a deficient number, since it is larger than the sum of its proper divisors (29137).

172145063 is an equidigital number, since it uses as much as digits as its factorization.

172145063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29136.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 172145063 is about 13120.4063580363. The cubic root of 172145063 is about 556.2860773974.

The spelling of 172145063 in words is "one hundred seventy-two million, one hundred forty-five thousand, sixty-three".