51727639 has 2 divisors, whose sum is σ = 51727640. Its totient is φ = 51727638.

The previous prime is 51727607. The next prime is 51727661. The reversal of 51727639 is 93672715.

51727639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51727639 - 2⁵ = 51727607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51727339) 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, 25863819 + 25863820.

It is an arithmetic number, because the mean of its divisors is an integer number (25863820).

Almost surely, 2^51727639 is an apocalyptic number.

51727639 is a deficient number, since it is larger than the sum of its proper divisors (1).

51727639 is an equidigital number, since it uses as much as digits as its factorization.

51727639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 51727639 is about 7192.1929201044. The cubic root of 51727639 is about 372.5983140644.

The spelling of 51727639 in words is "fifty-one million, seven hundred twenty-seven thousand, six hundred thirty-nine".