82130055 has 16 divisors (see below), whose sum is σ = 150180864. Its totient is φ = 37545120.

The previous prime is 82130051. The next prime is 82130089. The reversal of 82130055 is 55003128.

It is not a de Polignac number, because 82130055 - 2² = 82130051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82130051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390991 + ... + 391200.

It is an arithmetic number, because the mean of its divisors is an integer number (9386304).

Almost surely, 2^82130055 is an apocalyptic number.

82130055 is a deficient number, since it is larger than the sum of its proper divisors (68050809).

82130055 is a wasteful number, since it uses less digits than its factorization.

82130055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782206.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 82130055 is about 9062.5633790887. The cubic root of 82130055 is about 434.6777108076.

It can be divided in two parts, 821 and 30055, that added together give a triangular number (30876 = T₂₄₈).

The spelling of 82130055 in words is "eighty-two million, one hundred thirty thousand, fifty-five".