5517819397 has 2 divisors, whose sum is σ = 5517819398. Its totient is φ = 5517819396.

The previous prime is 5517819389. The next prime is 5517819403. The reversal of 5517819397 is 7939187155.

5517819397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5142467521 + 375351876 = 71711^2 + 19374^2 .

It is a cyclic number.

It is not a de Polignac number, because 5517819397 - 2³ = 5517819389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5517813397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2758909698 + 2758909699.

It is an arithmetic number, because the mean of its divisors is an integer number (2758909699).

Almost surely, 2^5517819397 is an apocalyptic number.

It is an amenable number.

5517819397 is a deficient number, since it is larger than the sum of its proper divisors (1).

5517819397 is an equidigital number, since it uses as much as digits as its factorization.

5517819397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2381400, while the sum is 55.

The square root of 5517819397 is about 74282.0260695681. The cubic root of 5517819397 is about 1767.0784361929.

The spelling of 5517819397 in words is "five billion, five hundred seventeen million, eight hundred nineteen thousand, three hundred ninety-seven".