51700163 has 2 divisors, whose sum is σ = 51700164. Its totient is φ = 51700162.

The previous prime is 51700109. The next prime is 51700171. The reversal of 51700163 is 36100715.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51700163 - 2¹⁰ = 51699139 is a prime.

It is not a weakly prime, because it can be changed into another prime (51700193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25850081 + 25850082.

It is an arithmetic number, because the mean of its divisors is an integer number (25850082).

Almost surely, 2^51700163 is an apocalyptic number.

51700163 is a deficient number, since it is larger than the sum of its proper divisors (1).

51700163 is an equidigital number, since it uses as much as digits as its factorization.

51700163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 51700163 is about 7190.2825396503. The cubic root of 51700163 is about 372.5323317732.

Adding to 51700163 its reverse (36100715), we get a palindrome (87800878).

The spelling of 51700163 in words is "fifty-one million, seven hundred thousand, one hundred sixty-three".