51361530121 has 8 divisors (see below), whose sum is σ = 56035281600. Its totient is φ = 46688532240.

The previous prime is 51361530089. The next prime is 51361530133. The reversal of 51361530121 is 12103516315.

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

It is a cyclic number.

It is not a de Polignac number, because 51361530121 - 2⁵ = 51361530089 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 51361530121.

It is not an unprimeable number, because it can be changed into a prime (51361530821) 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 7 ways as a sum of consecutive naturals, for example, 40861 + ... + 323098.

It is an arithmetic number, because the mean of its divisors is an integer number (7004410200).

Almost surely, 2^51361530121 is an apocalyptic number.

It is an amenable number.

51361530121 is a deficient number, since it is larger than the sum of its proper divisors (4673751479).

51361530121 is a wasteful number, since it uses less digits than its factorization.

51361530121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376799.

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 51361530121 in words is "fifty-one billion, three hundred sixty-one million, five hundred thirty thousand, one hundred twenty-one".