172143373 has 4 divisors (see below), whose sum is σ = 173722780. Its totient is φ = 170563968.

The previous prime is 172143353. The next prime is 172143421. The reversal of 172143373 is 373341271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 373341271 = 1471 ⋅253801.

It can be written as a sum of positive squares in 2 ways, for example, as 68856804 + 103286569 = 8298^2 + 10163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172143373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172143353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789540 + ... + 789757.

It is an arithmetic number, because the mean of its divisors is an integer number (43430695).

Almost surely, 2^172143373 is an apocalyptic number.

It is an amenable number.

172143373 is a deficient number, since it is larger than the sum of its proper divisors (1579407).

172143373 is a wasteful number, since it uses less digits than its factorization.

172143373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579406.

The product of its digits is 10584, while the sum is 31.

The square root of 172143373 is about 13120.3419543852. The cubic root of 172143373 is about 556.2842569821.

The spelling of 172143373 in words is "one hundred seventy-two million, one hundred forty-three thousand, three hundred seventy-three".