172612733 has 4 divisors (see below), whose sum is σ = 177277980. Its totient is φ = 167947488.

The previous prime is 172612697. The next prime is 172612763. The reversal of 172612733 is 337216271.

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 88303609 + 84309124 = 9397^2 + 9182^2 .

It is a cyclic number.

It is not a de Polignac number, because 172612733 - 2¹² = 172608637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172612733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172612763) 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, 2332568 + ... + 2332641.

It is an arithmetic number, because the mean of its divisors is an integer number (44319495).

Almost surely, 2^172612733 is an apocalyptic number.

It is an amenable number.

172612733 is a deficient number, since it is larger than the sum of its proper divisors (4665247).

172612733 is an equidigital number, since it uses as much as digits as its factorization.

172612733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665246.

The product of its digits is 10584, while the sum is 32.

The square root of 172612733 is about 13138.2165075782. The cubic root of 172612733 is about 556.7893798017.

The spelling of 172612733 in words is "one hundred seventy-two million, six hundred twelve thousand, seven hundred thirty-three".