172416945 has 8 divisors (see below), whose sum is σ = 275867136. Its totient is φ = 91955696.

The previous prime is 172416913. The next prime is 172416949. The reversal of 172416945 is 549614271.

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

It is a cyclic number.

It is not a de Polignac number, because 172416945 - 2⁵ = 172416913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172416949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5747217 + ... + 5747246.

It is an arithmetic number, because the mean of its divisors is an integer number (34483392).

Almost surely, 2^172416945 is an apocalyptic number.

172416945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172416945 is a deficient number, since it is larger than the sum of its proper divisors (103450191).

172416945 is a wasteful number, since it uses less digits than its factorization.

172416945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11494471.

The product of its digits is 60480, while the sum is 39.

The square root of 172416945 is about 13130.7633060687. The cubic root of 172416945 is about 556.5787852153.

The spelling of 172416945 in words is "one hundred seventy-two million, four hundred sixteen thousand, nine hundred forty-five".