51784151 has 2 divisors, whose sum is σ = 51784152. Its totient is φ = 51784150.

The previous prime is 51784147. The next prime is 51784217. The reversal of 51784151 is 15148715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51784151 - 2² = 51784147 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51784451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25892075 + 25892076.

It is an arithmetic number, because the mean of its divisors is an integer number (25892076).

Almost surely, 2^51784151 is an apocalyptic number.

51784151 is a deficient number, since it is larger than the sum of its proper divisors (1).

51784151 is an equidigital number, since it uses as much as digits as its factorization.

51784151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5600, while the sum is 32.

The square root of 51784151 is about 7196.1205520753. The cubic root of 51784151 is about 372.7339514982.

The spelling of 51784151 in words is "fifty-one million, seven hundred eighty-four thousand, one hundred fifty-one".