5517723857 has 2 divisors, whose sum is σ = 5517723858. Its totient is φ = 5517723856.

The previous prime is 5517723797. The next prime is 5517723859. The reversal of 5517723857 is 7583277155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4653422656 + 864301201 = 68216^2 + 29399^2 .

It is a cyclic number.

It is not a de Polignac number, because 5517723857 - 2¹² = 5517719761 is a prime.

Together with 5517723859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5517723859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2758861928 + 2758861929.

It is an arithmetic number, because the mean of its divisors is an integer number (2758861929).

Almost surely, 2^5517723857 is an apocalyptic number.

It is an amenable number.

5517723857 is a deficient number, since it is larger than the sum of its proper divisors (1).

5517723857 is an equidigital number, since it uses as much as digits as its factorization.

5517723857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2058000, while the sum is 50.

The square root of 5517723857 is about 74281.3829771633. The cubic root of 5517723857 is about 1767.0682372576.

The spelling of 5517723857 in words is "five billion, five hundred seventeen million, seven hundred twenty-three thousand, eight hundred fifty-seven".