172305933 has 4 divisors (see below), whose sum is σ = 229741248. Its totient is φ = 114870620.

The previous prime is 172305923. The next prime is 172305943. The reversal of 172305933 is 339503271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (172305923) and next prime (172305943).

It is a cyclic number.

It is not a de Polignac number, because 172305933 - 2¹² = 172301837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172305894 and 172305903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172305923) 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, 28717653 + ... + 28717658.

It is an arithmetic number, because the mean of its divisors is an integer number (57435312).

Almost surely, 2^172305933 is an apocalyptic number.

It is an amenable number.

172305933 is a deficient number, since it is larger than the sum of its proper divisors (57435315).

172305933 is an equidigital number, since it uses as much as digits as its factorization.

172305933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57435314.

The product of its (nonzero) digits is 17010, while the sum is 33.

The square root of 172305933 is about 13126.5354530432. The cubic root of 172305933 is about 556.4593070330.

The spelling of 172305933 in words is "one hundred seventy-two million, three hundred five thousand, nine hundred thirty-three".