555971 has 4 divisors (see below), whose sum is σ = 598752. Its totient is φ = 513192.

The previous prime is 555967. The next prime is 556007. The reversal of 555971 is 179555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179555 = 5 ⋅35911.

It is a cyclic number.

It is not a de Polignac number, because 555971 - 2² = 555967 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 555971.

It is not an unprimeable number, because it can be changed into a prime (555931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21371 + ... + 21396.

It is an arithmetic number, because the mean of its divisors is an integer number (149688).

2⁵⁵⁵⁹⁷¹ is an apocalyptic number.

555971 is a deficient number, since it is larger than the sum of its proper divisors (42781).

555971 is a wasteful number, since it uses less digits than its factorization.

555971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42780.

The product of its digits is 7875, while the sum is 32.

The square root of 555971 is about 745.6346290242. The cubic root of 555971 is about 82.2275555207.

The spelling of 555971 in words is "five hundred fifty-five thousand, nine hundred seventy-one".