51488539 has 2 divisors, whose sum is σ = 51488540. Its totient is φ = 51488538.

The previous prime is 51488509. The next prime is 51488581. The reversal of 51488539 is 93588415.

51488539 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 51488539 - 2⁹ = 51488027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51488495 and 51488504.

It is not a weakly prime, because it can be changed into another prime (51488509) 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, 25744269 + 25744270.

It is an arithmetic number, because the mean of its divisors is an integer number (25744270).

Almost surely, 2^51488539 is an apocalyptic number.

51488539 is a deficient number, since it is larger than the sum of its proper divisors (1).

51488539 is an equidigital number, since it uses as much as digits as its factorization.

51488539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 43.

The square root of 51488539 is about 7175.5514770643. The cubic root of 51488539 is about 372.0233417928.

The spelling of 51488539 in words is "fifty-one million, four hundred eighty-eight thousand, five hundred thirty-nine".