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5550052181 is a prime number
BaseRepresentation
bin1010010101100111…
…10001001101010101
3112022210101212022012
411022303301031111
542331303132211
62314420514005
7254351444102
oct51263611525
915283355265
105550052181
112398950393
1210aa84b905
136a5ab9a5b
143a9165aa9
152273a9d8b
hex14acf1355

5550052181 has 2 divisors, whose sum is σ = 5550052182. Its totient is φ = 5550052180.

The previous prime is 5550052139. The next prime is 5550052213. The reversal of 5550052181 is 1812500555.

It is an a-pointer prime, because the next prime (5550052213) can be obtained adding 5550052181 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3920638225 + 1629413956 = 62615^2 + 40366^2 .

It is a cyclic number.

It is not a de Polignac number, because 5550052181 - 26 = 5550052117 is a prime.

It is a super-2 number, since 2×55500521812 = 61606158423645713522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5550052681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775026090 + 2775026091.

It is an arithmetic number, because the mean of its divisors is an integer number (2775026091).

Almost surely, 25550052181 is an apocalyptic number.

It is an amenable number.

5550052181 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550052181 is an equidigital number, since it uses as much as digits as its factorization.

5550052181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10000, while the sum is 32.

The square root of 5550052181 is about 74498.6723438747. The cubic root of 5550052181 is about 1770.5126012756.

The spelling of 5550052181 in words is "five billion, five hundred fifty million, fifty-two thousand, one hundred eighty-one".