159557 has 4 divisors (see below), whose sum is σ = 164736. Its totient is φ = 154380.

The previous prime is 159553. The next prime is 159563. The reversal of 159557 is 755951.

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 not a de Polignac number, because 159557 - 2² = 159553 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 (159553) 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, 2543 + ... + 2604.

It is an arithmetic number, because the mean of its divisors is an integer number (41184).

2¹⁵⁹⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

159557 is a deficient number, since it is larger than the sum of its proper divisors (5179).

159557 is an equidigital number, since it uses as much as digits as its factorization.

159557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178.

The product of its digits is 7875, while the sum is 32.

The square root of 159557 is about 399.4458661696. The cubic root of 159557 is about 54.2382023940.

The spelling of 159557 in words is "one hundred fifty-nine thousand, five hundred fifty-seven".