51008047 has 2 divisors, whose sum is σ = 51008048. Its totient is φ = 51008046.

The previous prime is 51008029. The next prime is 51008107. The reversal of 51008047 is 74080015.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51008047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51008747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25504023 + 25504024.

It is an arithmetic number, because the mean of its divisors is an integer number (25504024).

Almost surely, 2^51008047 is an apocalyptic number.

51008047 is a deficient number, since it is larger than the sum of its proper divisors (1).

51008047 is an equidigital number, since it uses as much as digits as its factorization.

51008047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 51008047 is about 7141.9918090124. The cubic root of 51008047 is about 370.8624803024.

The spelling of 51008047 in words is "fifty-one million, eight thousand, forty-seven".