3550445 has 4 divisors (see below), whose sum is σ = 4260540. Its totient is φ = 2840352.

The previous prime is 3550439. The next prime is 3550447. The reversal of 3550445 is 5440553.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5440553 = 127 ⋅42839.

It can be written as a sum of positive squares in 2 ways, for example, as 2601769 + 948676 = 1613^2 + 974^2 .

It is a cyclic number.

It is not a de Polignac number, because 3550445 - 2⁸ = 3550189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3550447) 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 3 ways as a sum of consecutive naturals, for example, 355040 + ... + 355049.

It is an arithmetic number, because the mean of its divisors is an integer number (1065135).

Almost surely, 2^3550445 is an apocalyptic number.

It is an amenable number.

3550445 is a deficient number, since it is larger than the sum of its proper divisors (710095).

3550445 is an equidigital number, since it uses as much as digits as its factorization.

3550445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710094.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 3550445 is about 1884.2624551797. The cubic root of 3550445 is about 152.5554040381. Note that the first 3 decimals are identical.

Adding to 3550445 its reverse (5440553), we get a palindrome (8990998).

The spelling of 3550445 in words is "three million, five hundred fifty thousand, four hundred forty-five".