51043005 has 24 divisors (see below), whose sum is σ = 95281368. Its totient is φ = 25128576.

The previous prime is 51043001. The next prime is 51043007. The reversal of 51043005 is 50034015.

It can be written as a sum of positive squares in 4 ways, for example, as 191844 + 50851161 = 438^2 + 7131^2 .

It is not a de Polignac number, because 51043005 - 2² = 51043001 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51043001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43042 + ... + 44211.

It is an arithmetic number, because the mean of its divisors is an integer number (3970057).

Almost surely, 2^51043005 is an apocalyptic number.

It is an amenable number.

51043005 is a deficient number, since it is larger than the sum of its proper divisors (44238363).

51043005 is a wasteful number, since it uses less digits than its factorization.

51043005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87277 (or 87274 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 51043005 is about 7144.4387463257. The cubic root of 51043005 is about 370.9471836041.

The spelling of 51043005 in words is "fifty-one million, forty-three thousand, five".