291401 has 8 divisors (see below), whose sum is σ = 324000. Its totient is φ = 259840.

The previous prime is 291377. The next prime is 291419. The reversal of 291401 is 104192.

It is a happy number.

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 291401 - 2⁶ = 291337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 291401.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 291401.

It is not an unprimeable number, because it can be changed into a prime (291481) 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, 425 + ... + 873.

It is an arithmetic number, because the mean of its divisors is an integer number (40500).

2²⁹¹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

291401 is a deficient number, since it is larger than the sum of its proper divisors (32599).

291401 is a wasteful number, since it uses less digits than its factorization.

291401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 291401 is about 539.8157092935. The cubic root of 291401 is about 66.2974787224.

Adding to 291401 its reverse (104192), we get a palindrome (395593).

The spelling of 291401 in words is "two hundred ninety-one thousand, four hundred one".