5517380261 has 2 divisors, whose sum is σ = 5517380262. Its totient is φ = 5517380260.

The previous prime is 5517380249. The next prime is 5517380299. The reversal of 5517380261 is 1620837155.

It is an a-pointer prime, because the next prime (5517380299) can be obtained adding 5517380261 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5471560900 + 45819361 = 73970^2 + 6769^2 .

It is a cyclic number.

It is not a de Polignac number, because 5517380261 - 2²² = 5513185957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5517385261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2758690130 + 2758690131.

It is an arithmetic number, because the mean of its divisors is an integer number (2758690131).

Almost surely, 2^5517380261 is an apocalyptic number.

It is an amenable number.

5517380261 is a deficient number, since it is larger than the sum of its proper divisors (1).

5517380261 is an equidigital number, since it uses as much as digits as its factorization.

5517380261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 5517380261 is about 74279.0701409219. The cubic root of 5517380261 is about 1767.0315572668.

The spelling of 5517380261 in words is "five billion, five hundred seventeen million, three hundred eighty thousand, two hundred sixty-one".