5551505081 has 2 divisors, whose sum is σ = 5551505082. Its totient is φ = 5551505080.

The previous prime is 5551505077. The next prime is 5551505111. The reversal of 5551505081 is 1805051555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3270009856 + 2281495225 = 57184^2 + 47765^2 .

It is a cyclic number.

It is not a de Polignac number, because 5551505081 - 2² = 5551505077 is a prime.

It is a super-2 number, since 2×5551505081² = 61638417328737633122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5551505581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775752540 + 2775752541.

It is an arithmetic number, because the mean of its divisors is an integer number (2775752541).

Almost surely, 2^5551505081 is an apocalyptic number.

It is an amenable number.

5551505081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551505081 is an equidigital number, since it uses as much as digits as its factorization.

5551505081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25000, while the sum is 35.

The square root of 5551505081 is about 74508.4228862751. The cubic root of 5551505081 is about 1770.6670835063.

The spelling of 5551505081 in words is "five billion, five hundred fifty-one million, five hundred five thousand, eighty-one".