82515415 has 8 divisors (see below), whose sum is σ = 99067680. Its totient is φ = 65979552.

The previous prime is 82515401. The next prime is 82515427. The reversal of 82515415 is 51451528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82515415 - 2⁵ = 82515383 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15477 + ... + 20113.

It is an arithmetic number, because the mean of its divisors is an integer number (12383460).

Almost surely, 2^82515415 is an apocalyptic number.

82515415 is a deficient number, since it is larger than the sum of its proper divisors (16552265).

82515415 is a wasteful number, since it uses less digits than its factorization.

82515415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8201.

The product of its digits is 8000, while the sum is 31.

The square root of 82515415 is about 9083.7995904797. The cubic root of 82515415 is about 435.3564964155.

The spelling of 82515415 in words is "eighty-two million, five hundred fifteen thousand, four hundred fifteen".