5550555577261 has 2 divisors, whose sum is σ = 5550555577262. Its totient is φ = 5550555577260.

The previous prime is 5550555577201. The next prime is 5550555577291. The reversal of 5550555577261 is 1627755550555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4939977431236 + 610578146025 = 2222606^2 + 781395^2 .

It is a cyclic number.

It is not a de Polignac number, because 5550555577261 - 2¹⁵ = 5550555544493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5550555577196 and 5550555577205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5550555577201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775277788630 + 2775277788631.

It is an arithmetic number, because the mean of its divisors is an integer number (2775277788631).

Almost surely, 2^{5550555577261} is an apocalyptic number.

It is an amenable number.

5550555577261 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550555577261 is an equidigital number, since it uses as much as digits as its factorization.

5550555577261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45937500, while the sum is 58.

It can be divided in two parts, 555055 and 5577261, that added together give a palindrome (6132316).

The spelling of 5550555577261 in words is "five trillion, five hundred fifty billion, five hundred fifty-five million, five hundred seventy-seven thousand, two hundred sixty-one".