82115507 has 8 divisors (see below), whose sum is σ = 82811040. Its totient is φ = 81423360.

The previous prime is 82115489. The next prime is 82115519. The reversal of 82115507 is 70551128.

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 82115507 - 2¹⁴ = 82099123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82115507.

It is not an unprimeable number, because it can be changed into a prime (82115597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70643 + ... + 71795.

It is an arithmetic number, because the mean of its divisors is an integer number (10351380).

Almost surely, 2^82115507 is an apocalyptic number.

82115507 is a deficient number, since it is larger than the sum of its proper divisors (695533).

82115507 is a wasteful number, since it uses less digits than its factorization.

82115507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 82115507 is about 9061.7607008793. The cubic root of 82115507 is about 434.6520439359.

The spelling of 82115507 in words is "eighty-two million, one hundred fifteen thousand, five hundred seven".