427617161 has 2 divisors, whose sum is σ = 427617162. Its totient is φ = 427617160.

The previous prime is 427617149. The next prime is 427617187. The reversal of 427617161 is 161716724.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427207561 + 409600 = 20669^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 427617161 - 2¹⁴ = 427600777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427617101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213808580 + 213808581.

It is an arithmetic number, because the mean of its divisors is an integer number (213808581).

Almost surely, 2^427617161 is an apocalyptic number.

It is an amenable number.

427617161 is a deficient number, since it is larger than the sum of its proper divisors (1).

427617161 is an equidigital number, since it uses as much as digits as its factorization.

427617161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 35.

The square root of 427617161 is about 20678.9061848058. The cubic root of 427617161 is about 753.3874393793.

The spelling of 427617161 in words is "four hundred twenty-seven million, six hundred seventeen thousand, one hundred sixty-one".