172102373 has 4 divisors (see below), whose sum is σ = 182226060. Its totient is φ = 161978688.

The previous prime is 172102349. The next prime is 172102387. The reversal of 172102373 is 373201271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135536164 + 36566209 = 11642^2 + 6047^2 .

It is a cyclic number.

It is not a de Polignac number, because 172102373 - 2²⁰ = 171053797 is a prime.

It is a super-2 number, since 2×172102373² = 59238453584462258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172102393) by changing a digit.

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, 5061818 + ... + 5061851.

It is an arithmetic number, because the mean of its divisors is an integer number (45556515).

Almost surely, 2^172102373 is an apocalyptic number.

It is an amenable number.

172102373 is a deficient number, since it is larger than the sum of its proper divisors (10123687).

172102373 is a wasteful number, since it uses less digits than its factorization.

172102373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10123686.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 172102373 is about 13118.7794020633. The cubic root of 172102373 is about 556.2400894081.

The spelling of 172102373 in words is "one hundred seventy-two million, one hundred two thousand, three hundred seventy-three".