3355561 has 16 divisors (see below), whose sum is σ = 3867840. Its totient is φ = 2882880.

The previous prime is 3355553. The next prime is 3355577. The reversal of 3355561 is 1655533.

It is a happy number.

It is not a de Polignac number, because 3355561 - 2³ = 3355553 is a prime.

It is a super-2 number, since 2×3355561² = 22519579249442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3355661) 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, 21295 + ... + 21451.

It is an arithmetic number, because the mean of its divisors is an integer number (241740).

Almost surely, 2^3355561 is an apocalyptic number.

It is an amenable number.

3355561 is a deficient number, since it is larger than the sum of its proper divisors (512279).

3355561 is a wasteful number, since it uses less digits than its factorization.

3355561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its digits is 6750, while the sum is 28.

The square root of 3355561 is about 1831.8190412811. The cubic root of 3355561 is about 149.7114601357.

Subtracting from 3355561 its sum of digits (28), we obtain a palindrome (3355533).

It can be divided in two parts, 3355 and 561, that added together give a triangular number (3916 = T₈₈).

The spelling of 3355561 in words is "three million, three hundred fifty-five thousand, five hundred sixty-one".