172854397 has 4 divisors (see below), whose sum is σ = 172928160. Its totient is φ = 172780636.

The previous prime is 172854373. The next prime is 172854403. The reversal of 172854397 is 793458271.

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 172854397 - 2¹¹ = 172852349 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 (172854337) 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, 33247 + ... + 38092.

It is an arithmetic number, because the mean of its divisors is an integer number (43232040).

Almost surely, 2^172854397 is an apocalyptic number.

It is an amenable number.

172854397 is a deficient number, since it is larger than the sum of its proper divisors (73763).

172854397 is an equidigital number, since it uses as much as digits as its factorization.

172854397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73762.

The product of its digits is 423360, while the sum is 46.

The square root of 172854397 is about 13147.4102773132. The cubic root of 172854397 is about 557.0491003155.

The spelling of 172854397 in words is "one hundred seventy-two million, eight hundred fifty-four thousand, three hundred ninety-seven".