291078241 has 8 divisors (see below), whose sum is σ = 293080320. Its totient is φ = 289082928.

The previous prime is 291078187. The next prime is 291078247. The reversal of 291078241 is 142870192.

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 291078241 - 2²⁵ = 257523809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 291078197 and 291078206.

It is not an unprimeable number, because it can be changed into a prime (291078247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107395 + ... + 110071.

It is an arithmetic number, because the mean of its divisors is an integer number (36635040).

Almost surely, 2^291078241 is an apocalyptic number.

It is an amenable number.

291078241 is a deficient number, since it is larger than the sum of its proper divisors (2002079).

291078241 is a wasteful number, since it uses less digits than its factorization.

291078241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 291078241 is about 17061.0152394282. The cubic root of 291078241 is about 662.7299240392.

The spelling of 291078241 in words is "two hundred ninety-one million, seventy-eight thousand, two hundred forty-one".