51513050533 has 32 divisors (see below), whose sum is σ = 61390061568. Its totient is φ = 42303643200.

The previous prime is 51513050513. The next prime is 51513050539. The reversal of 51513050533 is 33505031515.

It is a happy number.

It is not a de Polignac number, because 51513050533 - 2²¹ = 51510953381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51513050495 and 51513050504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51513050539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24401148 + ... + 24403258.

It is an arithmetic number, because the mean of its divisors is an integer number (1918439424).

Almost surely, 2^51513050533 is an apocalyptic number.

It is an amenable number.

51513050533 is a deficient number, since it is larger than the sum of its proper divisors (9877011035).

51513050533 is a wasteful number, since it uses less digits than its factorization.

51513050533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553.

The product of its (nonzero) digits is 16875, while the sum is 31.

The spelling of 51513050533 in words is "fifty-one billion, five hundred thirteen million, fifty thousand, five hundred thirty-three".