556116641 has 2 divisors, whose sum is σ = 556116642. Its totient is φ = 556116640.

The previous prime is 556116611. The next prime is 556116647. The reversal of 556116641 is 146611655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 528816016 + 27300625 = 22996^2 + 5225^2 .

It is a cyclic number.

It is not a de Polignac number, because 556116641 - 2⁶ = 556116577 is a prime.

It is not a weakly prime, because it can be changed into another prime (556116647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278058320 + 278058321.

It is an arithmetic number, because the mean of its divisors is an integer number (278058321).

Almost surely, 2^556116641 is an apocalyptic number.

It is an amenable number.

556116641 is a deficient number, since it is larger than the sum of its proper divisors (1).

556116641 is an equidigital number, since it uses as much as digits as its factorization.

556116641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 556116641 is about 23582.1254555225. The cubic root of 556116641 is about 822.3473494667.

The spelling of 556116641 in words is "five hundred fifty-six million, one hundred sixteen thousand, six hundred forty-one".