3550945 has 4 divisors (see below), whose sum is σ = 4261140. Its totient is φ = 2840752.

The previous prime is 3550931. The next prime is 3550949. The reversal of 3550945 is 5490553.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2719201 + 831744 = 1649^2 + 912^2 .

It is a cyclic number.

It is not a de Polignac number, because 3550945 - 2⁷ = 3550817 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 not an unprimeable number, because it can be changed into a prime (3550949) 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, 355090 + ... + 355099.

It is an arithmetic number, because the mean of its divisors is an integer number (1065285).

Almost surely, 2^3550945 is an apocalyptic number.

It is an amenable number.

3550945 is a deficient number, since it is larger than the sum of its proper divisors (710195).

3550945 is an equidigital number, since it uses as much as digits as its factorization.

3550945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710194.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 3550945 is about 1884.3951284165. The cubic root of 3550945 is about 152.5625650298.

The spelling of 3550945 in words is "three million, five hundred fifty thousand, nine hundred forty-five".