556632217 has 2 divisors, whose sum is σ = 556632218. Its totient is φ = 556632216.

The previous prime is 556632211. The next prime is 556632229. The reversal of 556632217 is 712236655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281702656 + 274929561 = 16784^2 + 16581^2 .

It is a cyclic number.

It is not a de Polignac number, because 556632217 - 2²³ = 548243609 is a prime.

It is not a weakly prime, because it can be changed into another prime (556632211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278316108 + 278316109.

It is an arithmetic number, because the mean of its divisors is an integer number (278316109).

Almost surely, 2^556632217 is an apocalyptic number.

It is an amenable number.

556632217 is a deficient number, since it is larger than the sum of its proper divisors (1).

556632217 is an equidigital number, since it uses as much as digits as its factorization.

556632217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 556632217 is about 23593.0544228593. The cubic root of 556632217 is about 822.6014038433.

The spelling of 556632217 in words is "five hundred fifty-six million, six hundred thirty-two thousand, two hundred seventeen".