159285257 has 6 divisors (see below), whose sum is σ = 168710094. Its totient is φ = 149866560.

The previous prime is 159285233. The next prime is 159285263. The reversal of 159285257 is 752582951.

It can be written as a sum of positive squares in 3 ways, for example, as 127599616 + 31685641 = 11296^2 + 5629^2 .

It is not a de Polignac number, because 159285257 - 2⁸ = 159285001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159281257) 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 5 ways as a sum of consecutive naturals, for example, 50507 + ... + 53567.

It is an arithmetic number, because the mean of its divisors is an integer number (28118349).

Almost surely, 2^159285257 is an apocalyptic number.

159285257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

159285257 is a deficient number, since it is larger than the sum of its proper divisors (9424837).

159285257 is an frugal number, since it uses more digits than its factorization.

159285257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6139 (or 3078 counting only the distinct ones).

The product of its digits is 252000, while the sum is 44.

The square root of 159285257 is about 12620.8263200157. The cubic root of 159285257 is about 542.0739370274.

The spelling of 159285257 in words is "one hundred fifty-nine million, two hundred eighty-five thousand, two hundred fifty-seven".