3455554021 has 4 divisors (see below), whose sum is σ = 3455812332. Its totient is φ = 3455295712.

The previous prime is 3455554013. The next prime is 3455554027. The reversal of 3455554021 is 1204555543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1204555543 = 181 ⋅6655003.

It can be written as a sum of positive squares in 2 ways, for example, as 2733825796 + 721728225 = 52286^2 + 26865^2 .

It is a cyclic number.

It is not a de Polignac number, because 3455554021 - 2³ = 3455554013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3455554027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107926 + ... + 136231.

It is an arithmetic number, because the mean of its divisors is an integer number (863953083).

Almost surely, 2^3455554021 is an apocalyptic number.

It is an amenable number.

3455554021 is a deficient number, since it is larger than the sum of its proper divisors (258311).

3455554021 is a wasteful number, since it uses less digits than its factorization.

3455554021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258310.

The product of its (nonzero) digits is 60000, while the sum is 34.

The square root of 3455554021 is about 58783.9605759939. The cubic root of 3455554021 is about 1511.8402225473.

The spelling of 3455554021 in words is "three billion, four hundred fifty-five million, five hundred fifty-four thousand, twenty-one".