51103105 has 16 divisors (see below), whose sum is σ = 66690000. Its totient is φ = 37435392.

The previous prime is 51103069. The next prime is 51103109. The reversal of 51103105 is 50130115.

It can be written as a sum of positive squares in 8 ways, for example, as 6105841 + 44997264 = 2471^2 + 6708^2 .

It is a cyclic number.

It is not a de Polignac number, because 51103105 - 2¹⁵ = 51070337 is a prime.

It is a super-2 number, since 2×51103105² = 5223054681282050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51103109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4980 + ... + 11269.

It is an arithmetic number, because the mean of its divisors is an integer number (4168125).

Almost surely, 2^51103105 is an apocalyptic number.

It is an amenable number.

51103105 is a deficient number, since it is larger than the sum of its proper divisors (15586895).

51103105 is a wasteful number, since it uses less digits than its factorization.

51103105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16308.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 51103105 is about 7148.6435776307. The cubic root of 51103105 is about 371.0927156677.

The spelling of 51103105 in words is "fifty-one million, one hundred three thousand, one hundred five".