556318747 has 2 divisors, whose sum is σ = 556318748. Its totient is φ = 556318746.

The previous prime is 556318739. The next prime is 556318751. The reversal of 556318747 is 747813655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556318747 - 2³ = 556318739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556318697 and 556318706.

It is not a weakly prime, because it can be changed into another prime (556318757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278159373 + 278159374.

It is an arithmetic number, because the mean of its divisors is an integer number (278159374).

Almost surely, 2^556318747 is an apocalyptic number.

556318747 is a deficient number, since it is larger than the sum of its proper divisors (1).

556318747 is an equidigital number, since it uses as much as digits as its factorization.

556318747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 46.

The square root of 556318747 is about 23586.4102185983. The cubic root of 556318747 is about 822.4469575893.

It can be divided in two parts, 5563 and 18747, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 556318747 in words is "five hundred fifty-six million, three hundred eighteen thousand, seven hundred forty-seven".