51047903 has 8 divisors (see below), whose sum is σ = 51930240. Its totient is φ = 50169240.

The previous prime is 51047891. The next prime is 51047929. The reversal of 51047903 is 30974015.

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 51047903 - 2¹² = 51043807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51047963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48998 + ... + 50028.

It is an arithmetic number, because the mean of its divisors is an integer number (6491280).

Almost surely, 2^51047903 is an apocalyptic number.

51047903 is a deficient number, since it is larger than the sum of its proper divisors (882337).

51047903 is a wasteful number, since it uses less digits than its factorization.

51047903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 51047903 is about 7144.7815222021. The cubic root of 51047903 is about 370.9590483783.

The spelling of 51047903 in words is "fifty-one million, forty-seven thousand, nine hundred three".