51263963 has 2 divisors, whose sum is σ = 51263964. Its totient is φ = 51263962.

The previous prime is 51263939. The next prime is 51263999. The reversal of 51263963 is 36936215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51263963 - 2²⁰ = 50215387 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51263923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25631981 + 25631982.

It is an arithmetic number, because the mean of its divisors is an integer number (25631982).

Almost surely, 2^51263963 is an apocalyptic number.

51263963 is a deficient number, since it is larger than the sum of its proper divisors (1).

51263963 is an equidigital number, since it uses as much as digits as its factorization.

51263963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 35.

The square root of 51263963 is about 7159.8856834450. The cubic root of 51263963 is about 371.4816725222.

The spelling of 51263963 in words is "fifty-one million, two hundred sixty-three thousand, nine hundred sixty-three".