3555020 has 48 divisors (see below), whose sum is σ = 8682240. Its totient is φ = 1197504.

The previous prime is 3555017. The next prime is 3555029. The reversal of 3555020 is 205553.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3554983 and 3555001.

It is not an unprimeable number, because it can be changed into a prime (3555029) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9191 + ... + 9569.

It is an arithmetic number, because the mean of its divisors is an integer number (180880).

Almost surely, 2^3555020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3555020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4341120).

3555020 is an abundant number, since it is smaller than the sum of its proper divisors (5127220).

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

3555020 is a wasteful number, since it uses less digits than its factorization.

3555020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 3555020 is about 1885.4760672042. The cubic root of 3555020 is about 152.6209020631.

It can be divided in two parts, 35 and 55020, that added together give a palindrome (55055).

The spelling of 3555020 in words is "three million, five hundred fifty-five thousand, twenty".