159137997 has 8 divisors (see below), whose sum is σ = 214167456. Its totient is φ = 105100272.

The previous prime is 159137947. The next prime is 159138011. The reversal of 159137997 is 799731951.

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

It is not a de Polignac number, because 159137997 - 2¹⁰ = 159136973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159137947) 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, 247558 + ... + 248199.

It is an arithmetic number, because the mean of its divisors is an integer number (26770932).

Almost surely, 2^159137997 is an apocalyptic number.

It is an amenable number.

159137997 is a deficient number, since it is larger than the sum of its proper divisors (55029459).

159137997 is a wasteful number, since it uses less digits than its factorization.

159137997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495867.

The product of its digits is 535815, while the sum is 51.

The square root of 159137997 is about 12614.9909631359. The cubic root of 159137997 is about 541.9068355185.

The spelling of 159137997 in words is "one hundred fifty-nine million, one hundred thirty-seven thousand, nine hundred ninety-seven".