3555445 has 4 divisors (see below), whose sum is σ = 4266540. Its totient is φ = 2844352.

The previous prime is 3555443. The next prime is 3555449. The reversal of 3555445 is 5445553.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5445553 = 31 ⋅175663.

It can be written as a sum of positive squares in 2 ways, for example, as 1592644 + 1962801 = 1262^2 + 1401^2 .

It is a cyclic number.

It is not a de Polignac number, because 3555445 - 2¹ = 3555443 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3555443) 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, 355540 + ... + 355549.

It is an arithmetic number, because the mean of its divisors is an integer number (1066635).

Almost surely, 2^3555445 is an apocalyptic number.

It is an amenable number.

3555445 is a deficient number, since it is larger than the sum of its proper divisors (711095).

3555445 is an equidigital number, since it uses as much as digits as its factorization.

3555445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711094.

The product of its digits is 30000, while the sum is 31.

The square root of 3555445 is about 1885.5887674676. The cubic root of 3555445 is about 152.6269837259.

The spelling of 3555445 in words is "three million, five hundred fifty-five thousand, four hundred forty-five".