51485963 has 2 divisors, whose sum is σ = 51485964. Its totient is φ = 51485962.

The previous prime is 51485957. The next prime is 51485971. The reversal of 51485963 is 36958415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51485963 - 2¹⁸ = 51223819 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51485963.

It is not a weakly prime, because it can be changed into another prime (51485923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25742981 + 25742982.

It is an arithmetic number, because the mean of its divisors is an integer number (25742982).

Almost surely, 2^51485963 is an apocalyptic number.

51485963 is a deficient number, since it is larger than the sum of its proper divisors (1).

51485963 is an equidigital number, since it uses as much as digits as its factorization.

51485963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 41.

The square root of 51485963 is about 7175.3719764205. The cubic root of 51485963 is about 372.0171375116.

It can be divided in two parts, 5148 and 5963, that added together give a palindrome (11111).

The spelling of 51485963 in words is "fifty-one million, four hundred eighty-five thousand, nine hundred sixty-three".