105489221 has 2 divisors, whose sum is σ = 105489222. Its totient is φ = 105489220.

The previous prime is 105489217. The next prime is 105489259. The reversal of 105489221 is 122984501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97732996 + 7756225 = 9886^2 + 2785^2 .

It is an emirp because it is prime and its reverse (122984501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105489221 - 2² = 105489217 is a prime.

It is a super-2 number, since 2×105489221² = 22255951494373682, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105489271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52744610 + 52744611.

It is an arithmetic number, because the mean of its divisors is an integer number (52744611).

Almost surely, 2^105489221 is an apocalyptic number.

It is an amenable number.

105489221 is a deficient number, since it is larger than the sum of its proper divisors (1).

105489221 is an equidigital number, since it uses as much as digits as its factorization.

105489221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 105489221 is about 10270.7945651736. The cubic root of 105489221 is about 472.5009598443.

The spelling of 105489221 in words is "one hundred five million, four hundred eighty-nine thousand, two hundred twenty-one".