2877021855 has 32 divisors (see below), whose sum is σ = 5233662720. Its totient is φ = 1498724640.

The previous prime is 2877021841. The next prime is 2877021859. The reversal of 2877021855 is 5581207782.

It is not a de Polignac number, because 2877021855 - 2⁸ = 2877021599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2877021855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2877021859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242001 + ... + 253610.

It is an arithmetic number, because the mean of its divisors is an integer number (163551960).

Almost surely, 2^2877021855 is an apocalyptic number.

2877021855 is a deficient number, since it is larger than the sum of its proper divisors (2356640865).

2877021855 is a wasteful number, since it uses less digits than its factorization.

2877021855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495668 (or 495662 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The square root of 2877021855 is about 53637.8770553049. The cubic root of 2877021855 is about 1422.2667385821.

It can be divided in two parts, 28770 and 21855, that added together give a 4-th power (50625 = 15⁴).

The spelling of 2877021855 in words is "two billion, eight hundred seventy-seven million, twenty-one thousand, eight hundred fifty-five".