556161587 has 2 divisors, whose sum is σ = 556161588. Its totient is φ = 556161586.

The previous prime is 556161517. The next prime is 556161677. The reversal of 556161587 is 785161655.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556161587 - 2¹⁴ = 556145203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556161517) 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 as a sum of consecutive naturals, namely, 278080793 + 278080794.

It is an arithmetic number, because the mean of its divisors is an integer number (278080794).

Almost surely, 2^556161587 is an apocalyptic number.

556161587 is a deficient number, since it is larger than the sum of its proper divisors (1).

556161587 is an equidigital number, since it uses as much as digits as its factorization.

556161587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 44.

The square root of 556161587 is about 23583.0784038047. The cubic root of 556161587 is about 822.3695032294.

The spelling of 556161587 in words is "five hundred fifty-six million, one hundred sixty-one thousand, five hundred eighty-seven".