82722515 has 8 divisors (see below), whose sum is σ = 99900240. Its totient is φ = 65755872.

The previous prime is 82722503. The next prime is 82722533. The reversal of 82722515 is 51522728.

It is a happy number.

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 82722515 - 2⁸ = 82722259 is a prime.

It is an unprimeable number.

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, 51905 + ... + 53474.

It is an arithmetic number, because the mean of its divisors is an integer number (12487530).

Almost surely, 2^82722515 is an apocalyptic number.

82722515 is a deficient number, since it is larger than the sum of its proper divisors (17177725).

82722515 is a wasteful number, since it uses less digits than its factorization.

82722515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105541.

The product of its digits is 11200, while the sum is 32.

The square root of 82722515 is about 9095.1918616377. The cubic root of 82722515 is about 435.7204163149.

The spelling of 82722515 in words is "eighty-two million, seven hundred twenty-two thousand, five hundred fifteen".