55500005552569 has 2 divisors, whose sum is σ = 55500005552570. Its totient is φ = 55500005552568.

The previous prime is 55500005552549. The next prime is 55500005552573. The reversal of 55500005552569 is 96525550000555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51809591660544 + 3690413892025 = 7197888^2 + 1921045^2 .

It is a cyclic number.

It is not a de Polignac number, because 55500005552569 - 2⁷ = 55500005552441 is a prime.

It is a super-2 number, since 2×55500005552569² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55500005552549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27750002776284 + 27750002776285.

It is an arithmetic number, because the mean of its divisors is an integer number (27750002776285).

Almost surely, 2^{55500005552569} is an apocalyptic number.

It is an amenable number.

55500005552569 is a deficient number, since it is larger than the sum of its proper divisors (1).

55500005552569 is an equidigital number, since it uses as much as digits as its factorization.

55500005552569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8437500, while the sum is 52.

The spelling of 55500005552569 in words is "fifty-five trillion, five hundred billion, five million, five hundred fifty-two thousand, five hundred sixty-nine".