556289269 has 2 divisors, whose sum is σ = 556289270. Its totient is φ = 556289268.

The previous prime is 556289267. The next prime is 556289291. The reversal of 556289269 is 962982655.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366263044 + 190026225 = 19138^2 + 13785^2 .

It is a cyclic number.

It is not a de Polignac number, because 556289269 - 2¹ = 556289267 is a prime.

It is a super-2 number, since 2×556289269² = 618915501609108722, which contains 22 as substring.

Together with 556289267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556289267) 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, 278144634 + 278144635.

It is an arithmetic number, because the mean of its divisors is an integer number (278144635).

Almost surely, 2^556289269 is an apocalyptic number.

It is an amenable number.

556289269 is a deficient number, since it is larger than the sum of its proper divisors (1).

556289269 is an equidigital number, since it uses as much as digits as its factorization.

556289269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 52.

The square root of 556289269 is about 23585.7853165842. The cubic root of 556289269 is about 822.4324308335.

The spelling of 556289269 in words is "five hundred fifty-six million, two hundred eighty-nine thousand, two hundred sixty-nine".