2020555 has 8 divisors (see below), whose sum is σ = 2552400. Its totient is φ = 1531296.

The previous prime is 2020547. The next prime is 2020561. The reversal of 2020555 is 5550202.

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 2020555 - 2³ = 2020547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10540 + ... + 10729.

It is an arithmetic number, because the mean of its divisors is an integer number (319050).

2^2020555 is an apocalyptic number.

2020555 is a deficient number, since it is larger than the sum of its proper divisors (531845).

2020555 is a wasteful number, since it uses less digits than its factorization.

2020555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21293.

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 2020555 is about 1421.4622752645. The cubic root of 2020555 is about 126.4222626425.

Adding to 2020555 its product of nonzero digits (500), we get a triangular number (2021055 = T₂₀₁₀).

Adding to 2020555 its reverse (5550202), we get a palindrome (7570757).

The spelling of 2020555 in words is "two million, twenty thousand, five hundred fifty-five".