159732997 has 4 divisors (see below), whose sum is σ = 159792480. Its totient is φ = 159673516.

The previous prime is 159732973. The next prime is 159733009. The reversal of 159732997 is 799237951.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159732997 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 (159732967) 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 3 ways as a sum of consecutive naturals, for example, 25513 + ... + 31150.

It is an arithmetic number, because the mean of its divisors is an integer number (39948120).

Almost surely, 2^159732997 is an apocalyptic number.

It is an amenable number.

159732997 is a deficient number, since it is larger than the sum of its proper divisors (59483).

159732997 is an equidigital number, since it uses as much as digits as its factorization.

159732997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59482.

The product of its digits is 1071630, while the sum is 52.

The square root of 159732997 is about 12638.5520135813. The cubic root of 159732997 is about 542.5813728306.

The spelling of 159732997 in words is "one hundred fifty-nine million, seven hundred thirty-two thousand, nine hundred ninety-seven".