82505701 has 2 divisors, whose sum is σ = 82505702. Its totient is φ = 82505700.

The previous prime is 82505681. The next prime is 82505711. The reversal of 82505701 is 10750528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62489025 + 20016676 = 7905^2 + 4474^2 .

It is a cyclic number.

It is not a de Polignac number, because 82505701 - 2¹⁷ = 82374629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82505701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82505711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41252850 + 41252851.

It is an arithmetic number, because the mean of its divisors is an integer number (41252851).

Almost surely, 2^82505701 is an apocalyptic number.

It is an amenable number.

82505701 is a deficient number, since it is larger than the sum of its proper divisors (1).

82505701 is an equidigital number, since it uses as much as digits as its factorization.

82505701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 82505701 is about 9083.2648865923. The cubic root of 82505701 is about 435.3394118543.

The spelling of 82505701 in words is "eighty-two million, five hundred five thousand, seven hundred one".