51657163 has 2 divisors, whose sum is σ = 51657164. Its totient is φ = 51657162.

The previous prime is 51657119. The next prime is 51657173. The reversal of 51657163 is 36175615.

51657163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51657163 - 2⁹ = 51656651 is a prime.

It is not a weakly prime, because it can be changed into another prime (51657173) 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, 25828581 + 25828582.

It is an arithmetic number, because the mean of its divisors is an integer number (25828582).

Almost surely, 2^51657163 is an apocalyptic number.

51657163 is a deficient number, since it is larger than the sum of its proper divisors (1).

51657163 is an equidigital number, since it uses as much as digits as its factorization.

51657163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 51657163 is about 7187.2917708967. The cubic root of 51657163 is about 372.4290224058.

The spelling of 51657163 in words is "fifty-one million, six hundred fifty-seven thousand, one hundred sixty-three".