82578055 has 16 divisors (see below), whose sum is σ = 113693184. Its totient is φ = 56403360.

The previous prime is 82578053. The next prime is 82578071. The reversal of 82578055 is 55087528.

It is not a de Polignac number, because 82578055 - 2¹ = 82578053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82577999 and 82578017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82578053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4720 + ... + 13690.

It is an arithmetic number, because the mean of its divisors is an integer number (7105824).

Almost surely, 2^82578055 is an apocalyptic number.

82578055 is a deficient number, since it is larger than the sum of its proper divisors (31115129).

82578055 is a wasteful number, since it uses less digits than its factorization.

82578055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9246.

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 82578055 is about 9087.2468327871. The cubic root of 82578055 is about 435.4666327383.

The spelling of 82578055 in words is "eighty-two million, five hundred seventy-eight thousand, fifty-five".