556551101 has 2 divisors, whose sum is σ = 556551102. Its totient is φ = 556551100.

The previous prime is 556551067. The next prime is 556551131. The reversal of 556551101 is 101155655.

It is a happy number.

556551101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556488100 + 63001 = 23590^2 + 251^2 .

It is a cyclic number.

It is not a de Polignac number, because 556551101 - 2²⁶ = 489442237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556551131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278275550 + 278275551.

It is an arithmetic number, because the mean of its divisors is an integer number (278275551).

Almost surely, 2^556551101 is an apocalyptic number.

It is an amenable number.

556551101 is a deficient number, since it is larger than the sum of its proper divisors (1).

556551101 is an equidigital number, since it uses as much as digits as its factorization.

556551101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 556551101 is about 23591.3352949764. The cubic root of 556551101 is about 822.5614436596.

The spelling of 556551101 in words is "five hundred fifty-six million, five hundred fifty-one thousand, one hundred one".