82172023 has 2 divisors, whose sum is σ = 82172024. Its totient is φ = 82172022.

The previous prime is 82172021. The next prime is 82172047. The reversal of 82172023 is 32027128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82172023 - 2¹ = 82172021 is a prime.

Together with 82172021, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82172021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41086011 + 41086012.

It is an arithmetic number, because the mean of its divisors is an integer number (41086012).

Almost surely, 2^82172023 is an apocalyptic number.

82172023 is a deficient number, since it is larger than the sum of its proper divisors (1).

82172023 is an equidigital number, since it uses as much as digits as its factorization.

82172023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 82172023 is about 9064.8785430363. The cubic root of 82172023 is about 434.7517374952.

The spelling of 82172023 in words is "eighty-two million, one hundred seventy-two thousand, twenty-three".