172470045 has 16 divisors (see below), whose sum is σ = 301038912. Its totient is φ = 83621760.

The previous prime is 172470041. The next prime is 172470059. The reversal of 172470045 is 540074271.

It is not a de Polignac number, because 172470045 - 2² = 172470041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 172469994 and 172470021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172470041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522472 + ... + 522801.

It is an arithmetic number, because the mean of its divisors is an integer number (18814932).

Almost surely, 2^172470045 is an apocalyptic number.

172470045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172470045 is a deficient number, since it is larger than the sum of its proper divisors (128568867).

172470045 is a wasteful number, since it uses less digits than its factorization.

172470045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045292.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 172470045 is about 13132.7851196919. The cubic root of 172470045 is about 556.6359166842.

The spelling of 172470045 in words is "one hundred seventy-two million, four hundred seventy thousand, forty-five".