3551225 has 6 divisors (see below), whose sum is σ = 4403550. Its totient is φ = 2840960.

The previous prime is 3551221. The next prime is 3551227. The reversal of 3551225 is 5221553.

It can be written as a sum of positive squares in 3 ways, for example, as 65536 + 3485689 = 256^2 + 1867^2 .

It is not a de Polignac number, because 3551225 - 2² = 3551221 is a prime.

It is a super-2 number, since 2×3551225² = 25222398001250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3551225.

It is not an unprimeable number, because it can be changed into a prime (3551221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71000 + ... + 71049.

It is an arithmetic number, because the mean of its divisors is an integer number (733925).

Almost surely, 2^3551225 is an apocalyptic number.

It is an amenable number.

3551225 is a deficient number, since it is larger than the sum of its proper divisors (852325).

3551225 is a wasteful number, since it uses less digits than its factorization.

3551225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142059 (or 142054 counting only the distinct ones).

The product of its digits is 1500, while the sum is 23.

The square root of 3551225 is about 1884.4694213491. The cubic root of 3551225 is about 152.5665748916.

Adding to 3551225 its reverse (5221553), we get a palindrome (8772778).

The spelling of 3551225 in words is "three million, five hundred fifty-one thousand, two hundred twenty-five".