172314145 has 4 divisors (see below), whose sum is σ = 206776980. Its totient is φ = 137851312.

The previous prime is 172314133. The next prime is 172314157. The reversal of 172314145 is 541413271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541413271 = 7 ⋅77344753.

It is an interprime number because it is at equal distance from previous prime (172314133) and next prime (172314157).

It can be written as a sum of positive squares in 2 ways, for example, as 136025569 + 36288576 = 11663^2 + 6024^2 .

It is a cyclic number.

It is not a de Polignac number, because 172314145 - 2⁵ = 172314113 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17231410 + ... + 17231419.

It is an arithmetic number, because the mean of its divisors is an integer number (51694245).

Almost surely, 2^172314145 is an apocalyptic number.

It is an amenable number.

172314145 is a deficient number, since it is larger than the sum of its proper divisors (34462835).

172314145 is an equidigital number, since it uses as much as digits as its factorization.

172314145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34462834.

The product of its digits is 3360, while the sum is 28.

The square root of 172314145 is about 13126.8482508179. The cubic root of 172314145 is about 556.4681470677.

The spelling of 172314145 in words is "one hundred seventy-two million, three hundred fourteen thousand, one hundred forty-five".