161827250 has 128 divisors (see below), whose sum is σ = 360884160. Its totient is φ = 53760000.

The previous prime is 161827249. The next prime is 161827273. The reversal of 161827250 is 52728161.

161827250 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 32 ways, for example, as 18809569 + 143017681 = 4337^2 + 11959^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 63 ways as a sum of consecutive naturals, for example, 1602200 + ... + 1602300.

Almost surely, 2^161827250 is an apocalyptic number.

161827250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161827250 is an abundant number, since it is smaller than the sum of its proper divisors (199056910).

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

161827250 is a wasteful number, since it uses less digits than its factorization.

161827250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 161827250 is about 12721.1339903328. The cubic root of 161827250 is about 544.9423388201.

It can be divided in two parts, 16182 and 7250, that added together give a palindrome (23432).

The spelling of 161827250 in words is "one hundred sixty-one million, eight hundred twenty-seven thousand, two hundred fifty".