159481 has 4 divisors (see below), whose sum is σ = 182272. Its totient is φ = 136692.

The previous prime is 159473. The next prime is 159491. The reversal of 159481 is 184951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 159481 - 2³ = 159473 is a prime.

It is a super-2 number, since 2×159481² = 50868378722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (159421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11385 + ... + 11398.

It is an arithmetic number, because the mean of its divisors is an integer number (45568).

2¹⁵⁹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

159481 is a deficient number, since it is larger than the sum of its proper divisors (22791).

159481 is an equidigital number, since it uses as much as digits as its factorization.

159481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22790.

The product of its digits is 1440, while the sum is 28.

The square root of 159481 is about 399.3507230493. The cubic root of 159481 is about 54.2295894677.

The spelling of 159481 in words is "one hundred fifty-nine thousand, four hundred eighty-one".