51013010521 has 16 divisors (see below), whose sum is σ = 56585217600. Its totient is φ = 45597182400.

The previous prime is 51013010513. The next prime is 51013010533. The reversal of 51013010521 is 12501031015.

It is not a de Polignac number, because 51013010521 - 2³ = 51013010513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51013010621) 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 15 ways as a sum of consecutive naturals, for example, 1857790 + ... + 1885048.

It is an arithmetic number, because the mean of its divisors is an integer number (3536576100).

Almost surely, 2^51013010521 is an apocalyptic number.

It is an amenable number.

51013010521 is a deficient number, since it is larger than the sum of its proper divisors (5572207079).

51013010521 is a wasteful number, since it uses less digits than its factorization.

51013010521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30120.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 51013010521 its reverse (12501031015), we get a palindrome (63514041536).

It can be divided in two parts, 510 and 13010521, that added together give a palindrome (13011031).

The spelling of 51013010521 in words is "fifty-one billion, thirteen million, ten thousand, five hundred twenty-one".