159451 has 4 divisors (see below), whose sum is σ = 160272. Its totient is φ = 158632.

The previous prime is 159437. The next prime is 159457. The reversal of 159451 is 154951.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 154951 = 23 ⋅6737.

It is a cyclic number.

It is not a de Polignac number, because 159451 - 2¹⁵ = 126683 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159457) 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, 66 + ... + 568.

It is an arithmetic number, because the mean of its divisors is an integer number (40068).

2¹⁵⁹⁴⁵¹ is an apocalyptic number.

159451 is a deficient number, since it is larger than the sum of its proper divisors (821).

159451 is an equidigital number, since it uses as much as digits as its factorization.

159451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820.

The product of its digits is 900, while the sum is 25.

The square root of 159451 is about 399.3131603141. The cubic root of 159451 is about 54.2261888752.

The spelling of 159451 in words is "one hundred fifty-nine thousand, four hundred fifty-one".