51536659 has 2 divisors, whose sum is σ = 51536660. Its totient is φ = 51536658.

The previous prime is 51536623. The next prime is 51536689. The reversal of 51536659 is 95663515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51536659 - 2¹¹ = 51534611 is a prime.

It is not a weakly prime, because it can be changed into another prime (51536689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25768329 + 25768330.

It is an arithmetic number, because the mean of its divisors is an integer number (25768330).

Almost surely, 2^51536659 is an apocalyptic number.

51536659 is a deficient number, since it is larger than the sum of its proper divisors (1).

51536659 is an equidigital number, since it uses as much as digits as its factorization.

51536659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121500, while the sum is 40.

The square root of 51536659 is about 7178.9037463947. The cubic root of 51536659 is about 372.1392005165.

The spelling of 51536659 in words is "fifty-one million, five hundred thirty-six thousand, six hundred fifty-nine".