51263659 has 2 divisors, whose sum is σ = 51263660. Its totient is φ = 51263658.

The previous prime is 51263657. The next prime is 51263683. The reversal of 51263659 is 95636215.

51263659 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 51263659 - 2¹ = 51263657 is a prime.

Together with 51263657, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51263657) 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, 25631829 + 25631830.

It is an arithmetic number, because the mean of its divisors is an integer number (25631830).

Almost surely, 2^51263659 is an apocalyptic number.

51263659 is a deficient number, since it is larger than the sum of its proper divisors (1).

51263659 is an equidigital number, since it uses as much as digits as its factorization.

51263659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 37.

The square root of 51263659 is about 7159.8644540243. The cubic root of 51263659 is about 371.4809382139.

The spelling of 51263659 in words is "fifty-one million, two hundred sixty-three thousand, six hundred fifty-nine".