51764143 has 2 divisors, whose sum is σ = 51764144. Its totient is φ = 51764142.

The previous prime is 51764137. The next prime is 51764179. The reversal of 51764143 is 34146715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51764143 - 2⁹ = 51763631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51764123) 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 as a sum of consecutive naturals, namely, 25882071 + 25882072.

It is an arithmetic number, because the mean of its divisors is an integer number (25882072).

Almost surely, 2^51764143 is an apocalyptic number.

51764143 is a deficient number, since it is larger than the sum of its proper divisors (1).

51764143 is an equidigital number, since it uses as much as digits as its factorization.

51764143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 51764143 is about 7194.7302242683. The cubic root of 51764143 is about 372.6859405306.

The spelling of 51764143 in words is "fifty-one million, seven hundred sixty-four thousand, one hundred forty-three".