2055021020 has 48 divisors (see below), whose sum is σ = 4849588800. Its totient is φ = 725784576.

The previous prime is 2055020977. The next prime is 2055021037. The reversal of 2055021020 is 201205502.

It is a super-2 number, since 2×2055021020² = 8446222785283680800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2055021020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165845 + ... + 177804.

It is an arithmetic number, because the mean of its divisors is an integer number (101033100).

Almost surely, 2^2055021020 is an apocalyptic number.

2055021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2055021020 is an abundant number, since it is smaller than the sum of its proper divisors (2794567780).

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

2055021020 is a wasteful number, since it uses less digits than its factorization.

2055021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343694 (or 343692 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2055021020 is about 45332.3396704825. The cubic root of 2055021020 is about 1271.3703809824.

Adding to 2055021020 its reverse (201205502), we get a palindrome (2256226522).

The spelling of 2055021020 in words is "two billion, fifty-five million, twenty-one thousand, twenty".