5556666523 has 2 divisors, whose sum is σ = 5556666524. Its totient is φ = 5556666522.

The previous prime is 5556666499. The next prime is 5556666607. The reversal of 5556666523 is 3256666555.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5556666523 is a prime.

It is not a weakly prime, because it can be changed into another prime (5556666023) 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, 2778333261 + 2778333262.

It is an arithmetic number, because the mean of its divisors is an integer number (2778333262).

Almost surely, 2^5556666523 is an apocalyptic number.

5556666523 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556666523 is an equidigital number, since it uses as much as digits as its factorization.

5556666523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860000, while the sum is 49.

The square root of 5556666523 is about 74543.0514736283. The cubic root of 5556666523 is about 1771.2156653432.

The spelling of 5556666523 in words is "five billion, five hundred fifty-six million, six hundred sixty-six thousand, five hundred twenty-three".