51105121 has 8 divisors (see below), whose sum is σ = 52974720. Its totient is φ = 49268208.

The previous prime is 51105107. The next prime is 51105137. The reversal of 51105121 is 12150115.

51105121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51105121 - 2²¹ = 49007969 is a prime.

It is a super-2 number, since 2×51105121² = 5223466784849282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51105095 and 51105104.

It is not an unprimeable number, because it can be changed into a prime (51105101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4966 + ... + 11263.

It is an arithmetic number, because the mean of its divisors is an integer number (6621840).

Almost surely, 2^51105121 is an apocalyptic number.

It is an amenable number.

51105121 is a deficient number, since it is larger than the sum of its proper divisors (1869599).

51105121 is a wasteful number, since it uses less digits than its factorization.

51105121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16343.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 51105121 is about 7148.7845820111. The cubic root of 51105121 is about 371.0975954304.

Adding to 51105121 its reverse (12150115), we get a palindrome (63255236).

The spelling of 51105121 in words is "fifty-one million, one hundred five thousand, one hundred twenty-one".