159471281 has 4 divisors (see below), whose sum is σ = 159568500. Its totient is φ = 159374064.

The previous prime is 159471253. The next prime is 159471287. The reversal of 159471281 is 182174951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 182174951 = 7 ⋅26024993.

It can be written as a sum of positive squares in 2 ways, for example, as 88642225 + 70829056 = 9415^2 + 8416^2 .

It is a cyclic number.

It is not a de Polignac number, because 159471281 - 2¹⁰ = 159470257 is a prime.

It is a super-2 number, since 2×159471281² = 50862178927561922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (159471287) 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, 46106 + ... + 49443.

It is an arithmetic number, because the mean of its divisors is an integer number (39892125).

Almost surely, 2^159471281 is an apocalyptic number.

159471281 is the 5648-th centered decagonal number.

It is an amenable number.

159471281 is a deficient number, since it is larger than the sum of its proper divisors (97219).

159471281 is an equidigital number, since it uses as much as digits as its factorization.

159471281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97218.

The product of its digits is 20160, while the sum is 38.

The square root of 159471281 is about 12628.1938930316. The cubic root of 159471281 is about 542.2848783579.

The spelling of 159471281 in words is "one hundred fifty-nine million, four hundred seventy-one thousand, two hundred eighty-one".