82555770 has 32 divisors (see below), whose sum is σ = 216146880. Its totient is φ = 20013440.

The previous prime is 82555709. The next prime is 82555771. The reversal of 82555770 is 7755528.

It is not an unprimeable number, because it can be changed into a prime (82555771) 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 15 ways as a sum of consecutive naturals, for example, 124755 + ... + 125414.

It is an arithmetic number, because the mean of its divisors is an integer number (6754590).

Almost surely, 2^82555770 is an apocalyptic number.

82555770 is an abundant number, since it is smaller than the sum of its proper divisors (133591110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82555770 is a wasteful number, since it uses less digits than its factorization.

82555770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250190.

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

The square root of 82555770 is about 9086.0205810905. The cubic root of 82555770 is about 435.4274566844.

The spelling of 82555770 in words is "eighty-two million, five hundred fifty-five thousand, seven hundred seventy".