65551163 has 2 divisors, whose sum is σ = 65551164. Its totient is φ = 65551162.

The previous prime is 65551151. The next prime is 65551181. The reversal of 65551163 is 36115556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65551163 - 2⁴ = 65551147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (65551193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32775581 + 32775582.

It is an arithmetic number, because the mean of its divisors is an integer number (32775582).

Almost surely, 2^65551163 is an apocalyptic number.

65551163 is a deficient number, since it is larger than the sum of its proper divisors (1).

65551163 is an equidigital number, since it uses as much as digits as its factorization.

65551163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13500, while the sum is 32.

The square root of 65551163 is about 8096.3672718078. The cubic root of 65551163 is about 403.2058276163.

The spelling of 65551163 in words is "sixty-five million, five hundred fifty-one thousand, one hundred sixty-three".