163850521 has 2 divisors, whose sum is σ = 163850522. Its totient is φ = 163850520.

The previous prime is 163850483. The next prime is 163850527. The reversal of 163850521 is 125058361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159668496 + 4182025 = 12636^2 + 2045^2 .

It is a cyclic number.

It is not a de Polignac number, because 163850521 - 2¹⁷ = 163719449 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (163850527) 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, 81925260 + 81925261.

It is an arithmetic number, because the mean of its divisors is an integer number (81925261).

Almost surely, 2^163850521 is an apocalyptic number.

It is an amenable number.

163850521 is a deficient number, since it is larger than the sum of its proper divisors (1).

163850521 is an equidigital number, since it uses as much as digits as its factorization.

163850521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 163850521 is about 12800.4109699650. The cubic root of 163850521 is about 547.2040153531.

The spelling of 163850521 in words is "one hundred sixty-three million, eight hundred fifty thousand, five hundred twenty-one".