5105721051 has 12 divisors (see below), whose sum is σ = 7377342960. Its totient is φ = 3402700560.

The previous prime is 5105720989. The next prime is 5105721053. The reversal of 5105721051 is 1501275015.

It is not a de Polignac number, because 5105721051 - 2¹⁸ = 5105458907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5105721053) 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 in 11 ways as a sum of consecutive naturals, for example, 63255 + ... + 119216.

It is an arithmetic number, because the mean of its divisors is an integer number (614778580).

Almost surely, 2^5105721051 is an apocalyptic number.

5105721051 is a deficient number, since it is larger than the sum of its proper divisors (2271621909).

5105721051 is a wasteful number, since it uses less digits than its factorization.

5105721051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185586 (or 185583 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 5105721051 is about 71454.3284273248. The cubic root of 5105721051 is about 1721.9440173701.

Adding to 5105721051 its reverse (1501275015), we get a palindrome (6606996066).

The spelling of 5105721051 in words is "five billion, one hundred five million, seven hundred twenty-one thousand, fifty-one".