556016891 has 8 divisors (see below), whose sum is σ = 565518864. Its totient is φ = 546527520.

The previous prime is 556016873. The next prime is 556016921. The reversal of 556016891 is 198610655.

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 556016891 - 2¹⁴ = 556000507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556016821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140360 + ... + 144266.

It is an arithmetic number, because the mean of its divisors is an integer number (70689858).

Almost surely, 2^556016891 is an apocalyptic number.

556016891 is a deficient number, since it is larger than the sum of its proper divisors (9501973).

556016891 is a wasteful number, since it uses less digits than its factorization.

556016891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6301.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 556016891 is about 23580.0104113633. The cubic root of 556016891 is about 822.2981786950.

The spelling of 556016891 in words is "five hundred fifty-six million, sixteen thousand, eight hundred ninety-one".