82557705 has 16 divisors (see below), whose sum is σ = 134259264. Its totient is φ = 43308480.

The previous prime is 82557677. The next prime is 82557733. The reversal of 82557705 is 50775528.

It is an interprime number because it is at equal distance from previous prime (82557677) and next prime (82557733).

It is not a de Polignac number, because 82557705 - 2¹⁰ = 82556681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44199 + ... + 46028.

It is an arithmetic number, because the mean of its divisors is an integer number (8391204).

Almost surely, 2^82557705 is an apocalyptic number.

It is an amenable number.

82557705 is a deficient number, since it is larger than the sum of its proper divisors (51701559).

82557705 is a wasteful number, since it uses less digits than its factorization.

82557705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90296.

The product of its (nonzero) digits is 98000, while the sum is 39.

The square root of 82557705 is about 9086.1270627259. The cubic root of 82557705 is about 435.4308586091.

The spelling of 82557705 in words is "eighty-two million, five hundred fifty-seven thousand, seven hundred five".