51761543 has 2 divisors, whose sum is σ = 51761544. Its totient is φ = 51761542.

The previous prime is 51761533. The next prime is 51761581. The reversal of 51761543 is 34516715.

51761543 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 51761543 - 2⁴ = 51761527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51761503) 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, 25880771 + 25880772.

It is an arithmetic number, because the mean of its divisors is an integer number (25880772).

Almost surely, 2^51761543 is an apocalyptic number.

51761543 is a deficient number, since it is larger than the sum of its proper divisors (1).

51761543 is an equidigital number, since it uses as much as digits as its factorization.

51761543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 51761543 is about 7194.5495341960. The cubic root of 51761543 is about 372.6797006922.

The spelling of 51761543 in words is "fifty-one million, seven hundred sixty-one thousand, five hundred forty-three".