172174245 has 16 divisors (see below), whose sum is σ = 275641920. Its totient is φ = 91771904.

The previous prime is 172174241. The next prime is 172174273. The reversal of 172174245 is 542471271.

It is a cyclic number.

It is not a de Polignac number, because 172174245 - 2² = 172174241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172174241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45226 + ... + 48884.

It is an arithmetic number, because the mean of its divisors is an integer number (17227620).

Almost surely, 2^172174245 is an apocalyptic number.

172174245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172174245 is a deficient number, since it is larger than the sum of its proper divisors (103467675).

172174245 is a wasteful number, since it uses less digits than its factorization.

172174245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804.

The product of its digits is 15680, while the sum is 33.

The square root of 172174245 is about 13121.5183953687. The cubic root of 172174245 is about 556.3175094599.

The spelling of 172174245 in words is "one hundred seventy-two million, one hundred seventy-four thousand, two hundred forty-five".