2055720 has 64 divisors (see below), whose sum is σ = 6347520. Its totient is φ = 532224.

The previous prime is 2055719. The next prime is 2055727. The reversal of 2055720 is 275502.

It is not an unprimeable number, because it can be changed into a prime (2055727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4209 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (99180).

2^2055720 is an apocalyptic number.

2055720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2055720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3173760).

2055720 is an abundant number, since it is smaller than the sum of its proper divisors (4291800).

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

2055720 is a wasteful number, since it uses less digits than its factorization.

2055720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 2055720 is about 1433.7782255286. The cubic root of 2055720 is about 127.1514509554.

It can be divided in two parts, 2055 and 720, that added together give a triangular number (2775 = T₇₄).

The spelling of 2055720 in words is "two million, fifty-five thousand, seven hundred twenty".