172012373 has 4 divisors (see below), whose sum is σ = 185244108. Its totient is φ = 158780640.

The previous prime is 172012367. The next prime is 172012387. The reversal of 172012373 is 373210271.

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 113060689 + 58951684 = 10633^2 + 7678^2 .

It is a cyclic number.

It is not a de Polignac number, because 172012373 - 2¹⁰ = 172011349 is a prime.

It is a super-2 number, since 2×172012373² = 59176512930182258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172012303) 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, 6615848 + ... + 6615873.

It is an arithmetic number, because the mean of its divisors is an integer number (46311027).

Almost surely, 2^172012373 is an apocalyptic number.

172012373 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

172012373 is a deficient number, since it is larger than the sum of its proper divisors (13231735).

172012373 is a wasteful number, since it uses less digits than its factorization.

172012373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13231734.

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

The square root of 172012373 is about 13115.3487563236. The cubic root of 172012373 is about 556.1431115915.

The spelling of 172012373 in words is "one hundred seventy-two million, twelve thousand, three hundred seventy-three".