51106005061 has 4 divisors (see below), whose sum is σ = 51126136000. Its totient is φ = 51085874124.

The previous prime is 51106005043. The next prime is 51106005163. The reversal of 51106005061 is 16050060115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16050060115 = 5 ⋅3210012023.

It is a cyclic number.

It is not a de Polignac number, because 51106005061 - 2⁵ = 51106005029 is a prime.

It is a super-2 number, since 2×51106005061² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51106005011) 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 3 ways as a sum of consecutive naturals, for example, 10061661 + ... + 10066738.

It is an arithmetic number, because the mean of its divisors is an integer number (12781534000).

Almost surely, 2^51106005061 is an apocalyptic number.

It is an amenable number.

51106005061 is a deficient number, since it is larger than the sum of its proper divisors (20130939).

51106005061 is a wasteful number, since it uses less digits than its factorization.

51106005061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20130938.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 51106005061 its reverse (16050060115), we get a palindrome (67156065176).

The spelling of 51106005061 in words is "fifty-one billion, one hundred six million, five thousand, sixty-one".