632221 has 2 divisors, whose sum is σ = 632222. Its totient is φ = 632220.

The previous prime is 632209. The next prime is 632227. The reversal of 632221 is 122236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 632025 + 196 = 795^2 + 14^2 .

It is a cyclic number.

It is not a de Polignac number, because 632221 - 2⁵ = 632189 is a prime.

It is equal to p₅₁₅₀₅ and since 632221 and 51505 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 632195 and 632204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (632227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316110 + 316111.

It is an arithmetic number, because the mean of its divisors is an integer number (316111).

2⁶³²²²¹ is an apocalyptic number.

It is an amenable number.

632221 is a deficient number, since it is larger than the sum of its proper divisors (1).

632221 is an equidigital number, since it uses as much as digits as its factorization.

632221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 16.

The square root of 632221 is about 795.1232608848. The cubic root of 632221 is about 85.8268102834.

Adding to 632221 its reverse (122236), we get a palindrome (754457).

The spelling of 632221 in words is "six hundred thirty-two thousand, two hundred twenty-one".