2820555297 has 48 divisors (see below), whose sum is σ = 5072215680. Its totient is φ = 1541653344.

The previous prime is 2820555293. The next prime is 2820555317. The reversal of 2820555297 is 7925550282.

2820555297 is a `hidden beast` number, since 2 + 8 + 2 + 0 + 5 + 552 + 97 = 666.

It is not a de Polignac number, because 2820555297 - 2² = 2820555293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2820555293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15918 + ... + 76775.

It is an arithmetic number, because the mean of its divisors is an integer number (105671160).

Almost surely, 2^2820555297 is an apocalyptic number.

2820555297 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2820555297 is a deficient number, since it is larger than the sum of its proper divisors (2251660383).

2820555297 is a wasteful number, since it uses less digits than its factorization.

2820555297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92739 (or 92726 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The square root of 2820555297 is about 53108.9003557784. The cubic root of 2820555297 is about 1412.9003720759.

The spelling of 2820555297 in words is "two billion, eight hundred twenty million, five hundred fifty-five thousand, two hundred ninety-seven".