632213161 has 2 divisors, whose sum is σ = 632213162. Its totient is φ = 632213160.

The previous prime is 632213149. The next prime is 632213171. The reversal of 632213161 is 161312236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426835600 + 205377561 = 20660^2 + 14331^2 .

It is a cyclic number.

It is not a de Polignac number, because 632213161 - 2⁵ = 632213129 is a prime.

It is a super-2 number, since 2×632213161² = 799386961883223842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (632213171) 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, 316106580 + 316106581.

It is an arithmetic number, because the mean of its divisors is an integer number (316106581).

Almost surely, 2^632213161 is an apocalyptic number.

It is an amenable number.

632213161 is a deficient number, since it is larger than the sum of its proper divisors (1).

632213161 is an equidigital number, since it uses as much as digits as its factorization.

632213161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 632213161 is about 25143.8493671912. The cubic root of 632213161 is about 858.2645555556.

Adding to 632213161 its reverse (161312236), we get a palindrome (793525397).

The spelling of 632213161 in words is "six hundred thirty-two million, two hundred thirteen thousand, one hundred sixty-one".