82515479 has 2 divisors, whose sum is σ = 82515480. Its totient is φ = 82515478.

The previous prime is 82515451. The next prime is 82515491. The reversal of 82515479 is 97451528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82515479 - 2¹⁶ = 82449943 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82515449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41257739 + 41257740.

It is an arithmetic number, because the mean of its divisors is an integer number (41257740).

Almost surely, 2^82515479 is an apocalyptic number.

82515479 is a deficient number, since it is larger than the sum of its proper divisors (1).

82515479 is an equidigital number, since it uses as much as digits as its factorization.

82515479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 41.

The square root of 82515479 is about 9083.8031132340. The cubic root of 82515479 is about 435.3566089714.

The spelling of 82515479 in words is "eighty-two million, five hundred fifteen thousand, four hundred seventy-nine".