82555757 has 8 divisors (see below), whose sum is σ = 87665976. Its totient is φ = 77473792.

The previous prime is 82555709. The next prime is 82555771. The reversal of 82555757 is 75755528.

It can be written as a sum of positive squares in 4 ways, for example, as 3363556 + 79192201 = 1834^2 + 8899^2 .

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 82555757 - 2²⁴ = 65778541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82555787) 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, 878 + ... + 12879.

It is an arithmetic number, because the mean of its divisors is an integer number (10958247).

Almost surely, 2^82555757 is an apocalyptic number.

It is an amenable number.

82555757 is a deficient number, since it is larger than the sum of its proper divisors (5110219).

82555757 is a wasteful number, since it uses less digits than its factorization.

82555757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14127.

The product of its digits is 490000, while the sum is 44.

The square root of 82555757 is about 9086.0198657058. The cubic root of 82555757 is about 435.4274338289.

The spelling of 82555757 in words is "eighty-two million, five hundred fifty-five thousand, seven hundred fifty-seven".