159797503 has 4 divisors (see below), whose sum is σ = 163513768. Its totient is φ = 156081240.

The previous prime is 159797483. The next prime is 159797507. The reversal of 159797503 is 305797951.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 159797503 - 2⁵ = 159797471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159797507) 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, 1858068 + ... + 1858153.

It is an arithmetic number, because the mean of its divisors is an integer number (40878442).

Almost surely, 2^159797503 is an apocalyptic number.

159797503 is a deficient number, since it is larger than the sum of its proper divisors (3716265).

159797503 is an equidigital number, since it uses as much as digits as its factorization.

159797503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716264.

The product of its (nonzero) digits is 297675, while the sum is 46.

The square root of 159797503 is about 12641.1037097241. The cubic root of 159797503 is about 542.6544010389.

The spelling of 159797503 in words is "one hundred fifty-nine million, seven hundred ninety-seven thousand, five hundred three".