591121 has 8 divisors (see below), whose sum is σ = 617760. Its totient is φ = 565152.

The previous prime is 591113. The next prime is 591127. The reversal of 591121 is 121195.

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 591121 - 2³ = 591113 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (591127) 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, 2421 + ... + 2653.

It is an arithmetic number, because the mean of its divisors is an integer number (77220).

2⁵⁹¹¹²¹ is an apocalyptic number.

It is an amenable number.

591121 is a deficient number, since it is larger than the sum of its proper divisors (26639).

591121 is a wasteful number, since it uses less digits than its factorization.

591121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its digits is 90, while the sum is 19.

The square root of 591121 is about 768.8439373501. The cubic root of 591121 is about 83.9251506334.

The spelling of 591121 in words is "five hundred ninety-one thousand, one hundred twenty-one".