3455021 has 4 divisors (see below), whose sum is σ = 3467772. Its totient is φ = 3442272.

The previous prime is 3455009. The next prime is 3455033. The reversal of 3455021 is 1205543.

3455021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1205543 = 61 ⋅19763.

It is an interprime number because it is at equal distance from previous prime (3455009) and next prime (3455033).

It can be written as a sum of positive squares in 2 ways, for example, as 1464100 + 1990921 = 1210^2 + 1411^2 .

It is a cyclic number.

It is not a de Polignac number, because 3455021 - 2¹⁰ = 3453997 is a prime.

It is a super-2 number, since 2×3455021² = 23874340220882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3454984 and 3455002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3455051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5960 + ... + 6513.

It is an arithmetic number, because the mean of its divisors is an integer number (866943).

Almost surely, 2^3455021 is an apocalyptic number.

It is an amenable number.

3455021 is a deficient number, since it is larger than the sum of its proper divisors (12751).

3455021 is a wasteful number, since it uses less digits than its factorization.

3455021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12750.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 3455021 is about 1858.7686784536. The cubic root of 3455021 is about 151.1762484504.

It can be divided in two parts, 34 and 55021, that added together give a palindrome (55055).

The spelling of 3455021 in words is "three million, four hundred fifty-five thousand, twenty-one".