82555705 has 4 divisors (see below), whose sum is σ = 99066852. Its totient is φ = 66044560.

The previous prime is 82555699. The next prime is 82555709. The reversal of 82555705 is 50755528.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18731584 + 63824121 = 4328^2 + 7989^2 .

It is not a de Polignac number, because 82555705 - 2¹⁷ = 82424633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82555709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8255566 + ... + 8255575.

It is an arithmetic number, because the mean of its divisors is an integer number (24766713).

Almost surely, 2^82555705 is an apocalyptic number.

It is an amenable number.

82555705 is a deficient number, since it is larger than the sum of its proper divisors (16511147).

82555705 is a wasteful number, since it uses less digits than its factorization.

82555705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16511146.

The product of its (nonzero) digits is 70000, while the sum is 37.

The square root of 82555705 is about 9086.0170041663. The cubic root of 82555705 is about 435.4273424069.

The spelling of 82555705 in words is "eighty-two million, five hundred fifty-five thousand, seven hundred five".