5147547121 has 2 divisors, whose sum is σ = 5147547122. Its totient is φ = 5147547120.

The previous prime is 5147547103. The next prime is 5147547137. The reversal of 5147547121 is 1217457415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2847289600 + 2300257521 = 53360^2 + 47961^2 .

It is a cyclic number.

It is not a de Polignac number, because 5147547121 - 2¹⁵ = 5147514353 is a prime.

It is not a weakly prime, because it can be changed into another prime (5147547101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2573773560 + 2573773561.

It is an arithmetic number, because the mean of its divisors is an integer number (2573773561).

Almost surely, 2^5147547121 is an apocalyptic number.

It is an amenable number.

5147547121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5147547121 is an equidigital number, since it uses as much as digits as its factorization.

5147547121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39200, while the sum is 37.

The square root of 5147547121 is about 71746.4084188191. The cubic root of 5147547121 is about 1726.6332912251.

It can be divided in two parts, 51475 and 47121, that added together give a square (98596 = 314²).

The spelling of 5147547121 in words is "five billion, one hundred forty-seven million, five hundred forty-seven thousand, one hundred twenty-one".