556130723 has 4 divisors (see below), whose sum is σ = 556624440. Its totient is φ = 555637008.

The previous prime is 556130719. The next prime is 556130737. The reversal of 556130723 is 327031655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327031655 = 5 ⋅65406331.

It is a cyclic number.

It is not a de Polignac number, because 556130723 - 2² = 556130719 is a prime.

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 556130723.

It is not an unprimeable number, because it can be changed into a prime (556130023) 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, 245165 + ... + 247422.

It is an arithmetic number, because the mean of its divisors is an integer number (139156110).

Almost surely, 2^556130723 is an apocalyptic number.

556130723 is a deficient number, since it is larger than the sum of its proper divisors (493717).

556130723 is a wasteful number, since it uses less digits than its factorization.

556130723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493716.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 556130723 is about 23582.4240272284. The cubic root of 556130723 is about 822.3542905751.

The spelling of 556130723 in words is "five hundred fifty-six million, one hundred thirty thousand, seven hundred twenty-three".