172907745 has 8 divisors (see below), whose sum is σ = 276652416. Its totient is φ = 92217456.

The previous prime is 172907737. The next prime is 172907789. The reversal of 172907745 is 547709271.

172907745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172907745 - 2³ = 172907737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172907697 and 172907706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5763577 + ... + 5763606.

It is an arithmetic number, because the mean of its divisors is an integer number (34581552).

Almost surely, 2^172907745 is an apocalyptic number.

172907745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172907745 is a deficient number, since it is larger than the sum of its proper divisors (103744671).

172907745 is a wasteful number, since it uses less digits than its factorization.

172907745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11527191.

The product of its (nonzero) digits is 123480, while the sum is 42.

The square root of 172907745 is about 13149.4389614158. The cubic root of 172907745 is about 557.1064017191.

The spelling of 172907745 in words is "one hundred seventy-two million, nine hundred seven thousand, seven hundred forty-five".