51025520051 has 8 divisors (see below), whose sum is σ = 55684952064. Its totient is φ = 46369546120.

The previous prime is 51025520023. The next prime is 51025520059. The reversal of 51025520051 is 15002552015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51025520051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51025520051.

It is not an unprimeable number, because it can be changed into a prime (51025520059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833615 + ... + 892728.

It is an arithmetic number, because the mean of its divisors is an integer number (6960619008).

Almost surely, 2^51025520051 is an apocalyptic number.

51025520051 is a deficient number, since it is larger than the sum of its proper divisors (4659432013).

51025520051 is a wasteful number, since it uses less digits than its factorization.

51025520051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729041.

The product of its (nonzero) digits is 2500, while the sum is 26.

The spelling of 51025520051 in words is "fifty-one billion, twenty-five million, five hundred twenty thousand, fifty-one".