51156143 has 2 divisors, whose sum is σ = 51156144. Its totient is φ = 51156142.

The previous prime is 51156121. The next prime is 51156167. The reversal of 51156143 is 34165115.

51156143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51156143 - 2¹⁰ = 51155119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51146143) 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 as a sum of consecutive naturals, namely, 25578071 + 25578072.

It is an arithmetic number, because the mean of its divisors is an integer number (25578072).

Almost surely, 2^51156143 is an apocalyptic number.

51156143 is a deficient number, since it is larger than the sum of its proper divisors (1).

51156143 is an equidigital number, since it uses as much as digits as its factorization.

51156143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 26.

The square root of 51156143 is about 7152.3522704073. The cubic root of 51156143 is about 371.2210523594.

The spelling of 51156143 in words is "fifty-one million, one hundred fifty-six thousand, one hundred forty-three".