172073353 has 4 divisors (see below), whose sum is σ = 174641680. Its totient is φ = 169505028.

The previous prime is 172073311. The next prime is 172073357. The reversal of 172073353 is 353370271.

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 a cyclic number.

It is not a de Polignac number, because 172073353 - 2⁹ = 172072841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172073357) 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, 1284063 + ... + 1284196.

It is an arithmetic number, because the mean of its divisors is an integer number (43660420).

Almost surely, 2^172073353 is an apocalyptic number.

It is an amenable number.

172073353 is a deficient number, since it is larger than the sum of its proper divisors (2568327).

172073353 is an equidigital number, since it uses as much as digits as its factorization.

172073353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568326.

The product of its (nonzero) digits is 13230, while the sum is 31.

The square root of 172073353 is about 13117.6733074124. The cubic root of 172073353 is about 556.2088231439.

The spelling of 172073353 in words is "one hundred seventy-two million, seventy-three thousand, three hundred fifty-three".