82042501 has 2 divisors, whose sum is σ = 82042502. Its totient is φ = 82042500.

The previous prime is 82042489. The next prime is 82042531. The reversal of 82042501 is 10524028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58752225 + 23290276 = 7665^2 + 4826^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82042501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82042531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41021250 + 41021251.

It is an arithmetic number, because the mean of its divisors is an integer number (41021251).

Almost surely, 2^82042501 is an apocalyptic number.

It is an amenable number.

82042501 is a deficient number, since it is larger than the sum of its proper divisors (1).

82042501 is an equidigital number, since it uses as much as digits as its factorization.

82042501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 82042501 is about 9057.7315592813. The cubic root of 82042501 is about 434.5231944777.

Adding to 82042501 its reverse (10524028), we get a palindrome (92566529).

The spelling of 82042501 in words is "eighty-two million, forty-two thousand, five hundred one".