556791 has 8 divisors (see below), whose sum is σ = 766464. Its totient is φ = 359160.

The previous prime is 556789. The next prime is 556793. The reversal of 556791 is 197655.

It is an interprime number because it is at equal distance from previous prime (556789) and next prime (556793).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 556791 - 2¹ = 556789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556793) 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, 2901 + ... + 3086.

It is an arithmetic number, because the mean of its divisors is an integer number (95808).

2⁵⁵⁶⁷⁹¹ is an apocalyptic number.

556791 is a deficient number, since it is larger than the sum of its proper divisors (209673).

556791 is a wasteful number, since it uses less digits than its factorization.

556791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021.

The product of its digits is 9450, while the sum is 33.

The square root of 556791 is about 746.1842935897. The cubic root of 556791 is about 82.2679613894.

The spelling of 556791 in words is "five hundred fifty-six thousand, seven hundred ninety-one".