172116452 has 48 divisors (see below), whose sum is σ = 328648320. Its totient is φ = 78642432.

The previous prime is 172116409. The next prime is 172116467. The reversal of 172116452 is 254611271.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200408 + ... + 201264.

It is an arithmetic number, because the mean of its divisors is an integer number (6846840).

Almost surely, 2^172116452 is an apocalyptic number.

It is an amenable number.

172116452 is a deficient number, since it is larger than the sum of its proper divisors (156531868).

172116452 is a wasteful number, since it uses less digits than its factorization.

172116452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 978 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 172116452 is about 13119.3159882671. The cubic root of 172116452 is about 556.2552569128.

The spelling of 172116452 in words is "one hundred seventy-two million, one hundred sixteen thousand, four hundred fifty-two".