820060055 has 8 divisors (see below), whose sum is σ = 1026857952. Its totient is φ = 627524128.

The previous prime is 820060051. The next prime is 820060069. The reversal of 820060055 is 550060028.

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 820060055 - 2² = 820060051 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 (820060051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3565364 + ... + 3565593.

It is an arithmetic number, because the mean of its divisors is an integer number (128357244).

Almost surely, 2^820060055 is an apocalyptic number.

820060055 is a deficient number, since it is larger than the sum of its proper divisors (206797897).

820060055 is a wasteful number, since it uses less digits than its factorization.

820060055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130985.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 820060055 is about 28636.6907131393. The cubic root of 820060055 is about 936.0130117113.

The spelling of 820060055 in words is "eight hundred twenty million, sixty thousand, fifty-five".