556156247 has 4 divisors (see below), whose sum is σ = 556706280. Its totient is φ = 555606216.

The previous prime is 556156231. The next prime is 556156297. The reversal of 556156247 is 742651655.

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

It is a cyclic number.

It is not a de Polignac number, because 556156247 - 2⁴ = 556156231 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 (556156297) 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, 273497 + ... + 275522.

It is an arithmetic number, because the mean of its divisors is an integer number (139176570).

Almost surely, 2^556156247 is an apocalyptic number.

556156247 is a deficient number, since it is larger than the sum of its proper divisors (550033).

556156247 is a wasteful number, since it uses less digits than its factorization.

556156247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550032.

The product of its digits is 252000, while the sum is 41.

The square root of 556156247 is about 23582.9651867614. The cubic root of 556156247 is about 822.3668712202.

The spelling of 556156247 in words is "five hundred fifty-six million, one hundred fifty-six thousand, two hundred forty-seven".