5217051649 has 2 divisors, whose sum is σ = 5217051650. Its totient is φ = 5217051648.

The previous prime is 5217051643. The next prime is 5217051727. The reversal of 5217051649 is 9461507125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4294836225 + 922215424 = 65535^2 + 30368^2 .

It is a cyclic number.

It is not a de Polignac number, because 5217051649 - 2⁵ = 5217051617 is a prime.

It is not a weakly prime, because it can be changed into another prime (5217051643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2608525824 + 2608525825.

It is an arithmetic number, because the mean of its divisors is an integer number (2608525825).

Almost surely, 2^5217051649 is an apocalyptic number.

It is an amenable number.

5217051649 is a deficient number, since it is larger than the sum of its proper divisors (1).

5217051649 is an equidigital number, since it uses as much as digits as its factorization.

5217051649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 5217051649 is about 72229.1606555136. The cubic root of 5217051649 is about 1734.3698375060.

The spelling of 5217051649 in words is "five billion, two hundred seventeen million, fifty-one thousand, six hundred forty-nine".