82921061 has 2 divisors, whose sum is σ = 82921062. Its totient is φ = 82921060.

The previous prime is 82921037. The next prime is 82921079. The reversal of 82921061 is 16012928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49350625 + 33570436 = 7025^2 + 5794^2 .

It is a cyclic number.

It is not a de Polignac number, because 82921061 - 2¹⁴ = 82904677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82921361) 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, 41460530 + 41460531.

It is an arithmetic number, because the mean of its divisors is an integer number (41460531).

Almost surely, 2^82921061 is an apocalyptic number.

It is an amenable number.

82921061 is a deficient number, since it is larger than the sum of its proper divisors (1).

82921061 is an equidigital number, since it uses as much as digits as its factorization.

82921061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 82921061 is about 9106.1002081023. The cubic root of 82921061 is about 436.0687351303.

Adding to 82921061 its reverse (16012928), we get a palindrome (98933989).

The spelling of 82921061 in words is "eighty-two million, nine hundred twenty-one thousand, sixty-one".