5566129549 has 2 divisors, whose sum is σ = 5566129550. Its totient is φ = 5566129548.

The previous prime is 5566129519. The next prime is 5566129567. The reversal of 5566129549 is 9459216655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4657107049 + 909022500 = 68243^2 + 30150^2 .

It is a cyclic number.

It is not a de Polignac number, because 5566129549 - 2¹³ = 5566121357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5566129496 and 5566129505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5566129519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2783064774 + 2783064775.

It is an arithmetic number, because the mean of its divisors is an integer number (2783064775).

Almost surely, 2^5566129549 is an apocalyptic number.

It is an amenable number.

5566129549 is a deficient number, since it is larger than the sum of its proper divisors (1).

5566129549 is an equidigital number, since it uses as much as digits as its factorization.

5566129549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916000, while the sum is 52.

The square root of 5566129549 is about 74606.4980346886. The cubic root of 5566129549 is about 1772.2205576407.

The spelling of 5566129549 in words is "five billion, five hundred sixty-six million, one hundred twenty-nine thousand, five hundred forty-nine".