51103145 has 16 divisors (see below), whose sum is σ = 62735040. Its totient is φ = 39950400.

The previous prime is 51103121. The next prime is 51103153. The reversal of 51103145 is 54130115.

51103145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51103145 - 2¹⁸ = 50841001 is a prime.

It is a super-2 number, since 2×51103145² = 5223062857782050, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 61835 + ... + 62655.

It is an arithmetic number, because the mean of its divisors is an integer number (3920940).

Almost surely, 2^51103145 is an apocalyptic number.

It is an amenable number.

51103145 is a deficient number, since it is larger than the sum of its proper divisors (11631895).

51103145 is a wasteful number, since it uses less digits than its factorization.

51103145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51103145 is about 7148.6463753637. The cubic root of 51103145 is about 371.0928124896.

The spelling of 51103145 in words is "fifty-one million, one hundred three thousand, one hundred forty-five".