83189521 has 2 divisors, whose sum is σ = 83189522. Its totient is φ = 83189520.

The previous prime is 83189503. The next prime is 83189537. The reversal of 83189521 is 12598138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80299521 + 2890000 = 8961^2 + 1700^2 .

It is a cyclic number.

It is not a de Polignac number, because 83189521 - 2¹¹ = 83187473 is a prime.

It is not a weakly prime, because it can be changed into another prime (83189501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41594760 + 41594761.

It is an arithmetic number, because the mean of its divisors is an integer number (41594761).

Almost surely, 2^83189521 is an apocalyptic number.

It is an amenable number.

83189521 is a deficient number, since it is larger than the sum of its proper divisors (1).

83189521 is an equidigital number, since it uses as much as digits as its factorization.

83189521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 37.

The square root of 83189521 is about 9120.8289645185. The cubic root of 83189521 is about 436.5388244004.

The spelling of 83189521 in words is "eighty-three million, one hundred eighty-nine thousand, five hundred twenty-one".