485171221 has 2 divisors, whose sum is σ = 485171222. Its totient is φ = 485171220.

The previous prime is 485171209. The next prime is 485171233. The reversal of 485171221 is 122171584.

It is a balanced prime because it is at equal distance from previous prime (485171209) and next prime (485171233).

It can be written as a sum of positive squares in only one way, i.e., 484616196 + 555025 = 22014^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 485171221 - 2¹⁵ = 485138453 is a prime.

It is a super-2 number, since 2×485171221² = 470782227373261682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (485171201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242585610 + 242585611.

It is an arithmetic number, because the mean of its divisors is an integer number (242585611).

Almost surely, 2^485171221 is an apocalyptic number.

It is an amenable number.

485171221 is a deficient number, since it is larger than the sum of its proper divisors (1).

485171221 is an equidigital number, since it uses as much as digits as its factorization.

485171221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 31.

The square root of 485171221 is about 22026.6025750682. The cubic root of 485171221 is about 785.7752472228.

The spelling of 485171221 in words is "four hundred eighty-five million, one hundred seventy-one thousand, two hundred twenty-one".