5215129757 has 2 divisors, whose sum is σ = 5215129758. Its totient is φ = 5215129756.

The previous prime is 5215129753. The next prime is 5215129793. The reversal of 5215129757 is 7579215125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4533867556 + 681262201 = 67334^2 + 26101^2 .

It is a cyclic number.

It is not a de Polignac number, because 5215129757 - 2² = 5215129753 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5215129753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2607564878 + 2607564879.

It is an arithmetic number, because the mean of its divisors is an integer number (2607564879).

Almost surely, 2^5215129757 is an apocalyptic number.

It is an amenable number.

5215129757 is a deficient number, since it is larger than the sum of its proper divisors (1).

5215129757 is an equidigital number, since it uses as much as digits as its factorization.

5215129757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 220500, while the sum is 44.

The square root of 5215129757 is about 72215.8553020041. The cubic root of 5215129757 is about 1734.1568384704.

The spelling of 5215129757 in words is "five billion, two hundred fifteen million, one hundred twenty-nine thousand, seven hundred fifty-seven".