161171200 has 54 divisors (see below), whose sum is σ = 398939744. Its totient is φ = 64465920.

The previous prime is 161171177. The next prime is 161171221. The reversal of 161171200 is 2171161.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 6192 + ... + 18991.

Almost surely, 2^161171200 is an apocalyptic number.

161171200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161171200 is an abundant number, since it is smaller than the sum of its proper divisors (237768544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161171200 is an equidigital number, since it uses as much as digits as its factorization.

161171200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25209 (or 25190 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 161171200 is about 12695.3219730734. The cubic root of 161171200 is about 544.2049400847.

The spelling of 161171200 in words is "one hundred sixty-one million, one hundred seventy-one thousand, two hundred".