172475293 has 4 divisors (see below), whose sum is σ = 181552960. Its totient is φ = 163397628.

The previous prime is 172475269. The next prime is 172475297. The reversal of 172475293 is 392574271.

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, and also an emirpimes, since its reverse is a distinct semiprime: 392574271 = 617 ⋅636263.

It is a cyclic number.

It is not a de Polignac number, because 172475293 - 2²¹ = 170378141 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 (172475297) 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, 4538805 + ... + 4538842.

It is an arithmetic number, because the mean of its divisors is an integer number (45388240).

Almost surely, 2^172475293 is an apocalyptic number.

It is an amenable number.

172475293 is a deficient number, since it is larger than the sum of its proper divisors (9077667).

172475293 is an equidigital number, since it uses as much as digits as its factorization.

172475293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9077666.

The product of its digits is 105840, while the sum is 40.

The square root of 172475293 is about 13132.9849234666. The cubic root of 172475293 is about 556.6415624872.

The spelling of 172475293 in words is "one hundred seventy-two million, four hundred seventy-five thousand, two hundred ninety-three".