51091043 has 8 divisors (see below), whose sum is σ = 53753280. Its totient is φ = 48496320.

The previous prime is 51091039. The next prime is 51091049. The reversal of 51091043 is 34019015.

It is a happy number.

51091043 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 51091043 - 2² = 51091039 is a prime.

It is a super-2 number, since 2×51091043² = 5220589349655698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51091049) 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, 15323 + ... + 18356.

It is an arithmetic number, because the mean of its divisors is an integer number (6719160).

Almost surely, 2^51091043 is an apocalyptic number.

51091043 is a deficient number, since it is larger than the sum of its proper divisors (2662237).

51091043 is a wasteful number, since it uses less digits than its factorization.

51091043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33757.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 51091043 is about 7147.7998712891. The cubic root of 51091043 is about 371.0635167077.

The spelling of 51091043 in words is "fifty-one million, ninety-one thousand, forty-three".