159561792 has 112 divisors (see below), whose sum is σ = 505236480. Its totient is φ = 49089024.

The previous prime is 159561761. The next prime is 159561793. The reversal of 159561792 is 297165951.

159561792 is a `hidden beast` number, since 15 + 9 + 561 + 79 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (159561793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18913 + ... + 26015.

It is an arithmetic number, because the mean of its divisors is an integer number (4511040).

Almost surely, 2^159561792 is an apocalyptic number.

159561792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159561792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252618240).

159561792 is an abundant number, since it is smaller than the sum of its proper divisors (345674688).

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

159561792 is a wasteful number, since it uses less digits than its factorization.

159561792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7137 (or 7121 counting only the distinct ones).

The product of its digits is 170100, while the sum is 45.

The square root of 159561792 is about 12631.7770721304. Note that the first 3 decimals coincide. The cubic root of 159561792 is about 542.3874536999.

The spelling of 159561792 in words is "one hundred fifty-nine million, five hundred sixty-one thousand, seven hundred ninety-two".