556968081 has 4 divisors (see below), whose sum is σ = 742624112. Its totient is φ = 371312052.

The previous prime is 556968079. The next prime is 556968101. The reversal of 556968081 is 180869655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 556968081 - 2¹ = 556968079 is a prime.

It is a super-2 number, since 2×556968081² = 620426886505645122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556968081.

It is not an unprimeable number, because it can be changed into a prime (556968281) 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, 92828011 + ... + 92828016.

It is an arithmetic number, because the mean of its divisors is an integer number (185656028).

Almost surely, 2^556968081 is an apocalyptic number.

It is an amenable number.

556968081 is a deficient number, since it is larger than the sum of its proper divisors (185656031).

556968081 is a wasteful number, since it uses less digits than its factorization.

556968081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185656030.

The product of its (nonzero) digits is 518400, while the sum is 48.

The square root of 556968081 is about 23600.1712070061. The cubic root of 556968081 is about 822.7668192587.

The spelling of 556968081 in words is "five hundred fifty-six million, nine hundred sixty-eight thousand, eighty-one".