51777743 has 2 divisors, whose sum is σ = 51777744. Its totient is φ = 51777742.

The previous prime is 51777721. The next prime is 51777779. The reversal of 51777743 is 34777715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51777743 - 2¹⁶ = 51712207 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51777743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51777703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25888871 + 25888872.

It is an arithmetic number, because the mean of its divisors is an integer number (25888872).

Almost surely, 2^51777743 is an apocalyptic number.

51777743 is a deficient number, since it is larger than the sum of its proper divisors (1).

51777743 is an equidigital number, since it uses as much as digits as its factorization.

51777743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144060, while the sum is 41.

The square root of 51777743 is about 7195.6752983997. The cubic root of 51777743 is about 372.7185762812.

The spelling of 51777743 in words is "fifty-one million, seven hundred seventy-seven thousand, seven hundred forty-three".