291601159 has 6 divisors (see below), whose sum is σ = 301105824. Its totient is φ = 282102660.

The previous prime is 291601147. The next prime is 291601169. The reversal of 291601159 is 951106192.

It is a happy number.

It is not a de Polignac number, because 291601159 - 2⁵ = 291601127 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 (291601139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93544 + ... + 96610.

It is an arithmetic number, because the mean of its divisors is an integer number (50184304).

Almost surely, 2^291601159 is an apocalyptic number.

291601159 is a deficient number, since it is larger than the sum of its proper divisors (9504665).

291601159 is an frugal number, since it uses more digits than its factorization.

291601159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6165 (or 3098 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 34.

The square root of 291601159 is about 17076.3333007997. Note that the first 4 decimals coincide. The cubic root of 291601159 is about 663.1265483122.

The spelling of 291601159 in words is "two hundred ninety-one million, six hundred one thousand, one hundred fifty-nine".