82513169 has 2 divisors, whose sum is σ = 82513170. Its totient is φ = 82513168.

The previous prime is 82513163. The next prime is 82513177. The reversal of 82513169 is 96131528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78978769 + 3534400 = 8887^2 + 1880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82513169 is a prime.

It is a super-2 number, since 2×82513169² = 13616846116845122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82513163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41256584 + 41256585.

It is an arithmetic number, because the mean of its divisors is an integer number (41256585).

Almost surely, 2^82513169 is an apocalyptic number.

It is an amenable number.

82513169 is a deficient number, since it is larger than the sum of its proper divisors (1).

82513169 is an equidigital number, since it uses as much as digits as its factorization.

82513169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 82513169 is about 9083.6759629568. The cubic root of 82513169 is about 435.3525463674.

The spelling of 82513169 in words is "eighty-two million, five hundred thirteen thousand, one hundred sixty-nine".