172254398 has 4 divisors (see below), whose sum is σ = 258381600. Its totient is φ = 86127198.

The previous prime is 172254391. The next prime is 172254409. The reversal of 172254398 is 893452271.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×172254398³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172254391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43063598 + ... + 43063601.

It is an arithmetic number, because the mean of its divisors is an integer number (64595400).

Almost surely, 2^172254398 is an apocalyptic number.

172254398 is a deficient number, since it is larger than the sum of its proper divisors (86127202).

172254398 is an equidigital number, since it uses as much as digits as its factorization.

172254398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86127201.

The product of its digits is 120960, while the sum is 41.

The square root of 172254398 is about 13124.5722977932. The cubic root of 172254398 is about 556.4038243433.

The spelling of 172254398 in words is "one hundred seventy-two million, two hundred fifty-four thousand, three hundred ninety-eight".