556923881 has 8 divisors (see below), whose sum is σ = 560105280. Its totient is φ = 553751248.

The previous prime is 556923827. The next prime is 556923901. The reversal of 556923881 is 188329655.

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 556923881 - 2¹⁰ = 556922857 is a prime.

It is a super-2 number, since 2×556923881² = 620328418456204322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556923811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156140 + ... + 159666.

It is an arithmetic number, because the mean of its divisors is an integer number (70013160).

Almost surely, 2^556923881 is an apocalyptic number.

It is an amenable number.

556923881 is a deficient number, since it is larger than the sum of its proper divisors (3181399).

556923881 is a wasteful number, since it uses less digits than its factorization.

556923881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383.

The product of its digits is 518400, while the sum is 47.

The square root of 556923881 is about 23599.2347545424. The cubic root of 556923881 is about 822.7450542440.

The spelling of 556923881 in words is "five hundred fifty-six million, nine hundred twenty-three thousand, eight hundred eighty-one".