5101005521 has 2 divisors, whose sum is σ = 5101005522. Its totient is φ = 5101005520.

The previous prime is 5101005479. The next prime is 5101005571. The reversal of 5101005521 is 1255001015.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5021706496 + 79299025 = 70864^2 + 8905^2 .

It is a cyclic number.

It is not a de Polignac number, because 5101005521 - 2¹⁰ = 5101004497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5101005493 and 5101005502.

It is not a weakly prime, because it can be changed into another prime (5101005571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550502760 + 2550502761.

It is an arithmetic number, because the mean of its divisors is an integer number (2550502761).

Almost surely, 2^5101005521 is an apocalyptic number.

It is an amenable number.

5101005521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5101005521 is an equidigital number, since it uses as much as digits as its factorization.

5101005521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 5101005521 is about 71421.3239936085. The cubic root of 5101005521 is about 1721.4137377319.

Adding to 5101005521 its reverse (1255001015), we get a palindrome (6356006536).

The spelling of 5101005521 in words is "five billion, one hundred one million, five thousand, five hundred twenty-one".