161354560 has 56 divisors (see below), whose sum is σ = 385328160. Its totient is φ = 64356864.

The previous prime is 161354537. The next prime is 161354569. The reversal of 161354560 is 65453161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161354569) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 187411 + ... + 188269.

It is an arithmetic number, because the mean of its divisors is an integer number (6880860).

Almost surely, 2^161354560 is an apocalyptic number.

161354560 is a gapful number since it is divisible by the number (10) 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 161354560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192664080).

161354560 is an abundant number, since it is smaller than the sum of its proper divisors (223973600).

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

161354560 is an equidigital number, since it uses as much as digits as its factorization.

161354560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463 (or 1453 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 161354560 is about 12702.5414779878. The cubic root of 161354560 is about 544.4112374891.

The spelling of 161354560 in words is "one hundred sixty-one million, three hundred fifty-four thousand, five hundred sixty".