159240257 has 8 divisors (see below), whose sum is σ = 173896320. Its totient is φ = 144614160.

The previous prime is 159240227. The next prime is 159240281. The reversal of 159240257 is 752042951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 159240257 - 2⁸ = 159240001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159240217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4463 + ... + 18395.

It is an arithmetic number, because the mean of its divisors is an integer number (21737040).

Almost surely, 2^159240257 is an apocalyptic number.

It is an amenable number.

159240257 is a deficient number, since it is larger than the sum of its proper divisors (14656063).

159240257 is a wasteful number, since it uses less digits than its factorization.

159240257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14983.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 159240257 is about 12619.0434265042. The cubic root of 159240257 is about 542.0228847515.

The spelling of 159240257 in words is "one hundred fifty-nine million, two hundred forty thousand, two hundred fifty-seven".