556340111 has 4 divisors (see below), whose sum is σ = 569909424. Its totient is φ = 542770800.

The previous prime is 556340093. The next prime is 556340129. The reversal of 556340111 is 111043655.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (556340093) and next prime (556340129).

It is a cyclic number.

It is not a de Polignac number, because 556340111 - 2¹⁰ = 556339087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556340131) 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 3 ways as a sum of consecutive naturals, for example, 6784595 + ... + 6784676.

It is an arithmetic number, because the mean of its divisors is an integer number (142477356).

Almost surely, 2^556340111 is an apocalyptic number.

556340111 is a deficient number, since it is larger than the sum of its proper divisors (13569313).

556340111 is a wasteful number, since it uses less digits than its factorization.

556340111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13569312.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 556340111 is about 23586.8631021592. The cubic root of 556340111 is about 822.4574854458.

Adding to 556340111 its reverse (111043655), we get a palindrome (667383766).

The spelling of 556340111 in words is "five hundred fifty-six million, three hundred forty thousand, one hundred eleven".