5215129847 has 2 divisors, whose sum is σ = 5215129848. Its totient is φ = 5215129846.

The previous prime is 5215129837. The next prime is 5215129903. The reversal of 5215129847 is 7489215125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5215129847 - 2³⁰ = 4141388023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5215129798 and 5215129807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5215129837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2607564923 + 2607564924.

It is an arithmetic number, because the mean of its divisors is an integer number (2607564924).

Almost surely, 2^5215129847 is an apocalyptic number.

5215129847 is a deficient number, since it is larger than the sum of its proper divisors (1).

5215129847 is an equidigital number, since it uses as much as digits as its factorization.

5215129847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 44.

The square root of 5215129847 is about 72215.8559251360. The cubic root of 5215129847 is about 1734.1568484461.

The spelling of 5215129847 in words is "five billion, two hundred fifteen million, one hundred twenty-nine thousand, eight hundred forty-seven".