1543225 has 6 divisors (see below), whose sum is σ = 1913630. Its totient is φ = 1234560.

The previous prime is 1543207. The next prime is 1543229. The reversal of 1543225 is 5223451.

It can be written as a sum of positive squares in 3 ways, for example, as 467856 + 1075369 = 684^2 + 1037^2 .

It is not a de Polignac number, because 1543225 - 2¹⁷ = 1412153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1543196 and 1543205.

It is not an unprimeable number, because it can be changed into a prime (1543229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30840 + ... + 30889.

2^1543225 is an apocalyptic number.

It is an amenable number.

1543225 is a deficient number, since it is larger than the sum of its proper divisors (370405).

1543225 is an equidigital number, since it uses as much as digits as its factorization.

1543225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61739 (or 61734 counting only the distinct ones).

The product of its digits is 1200, while the sum is 22.

The square root of 1543225 is about 1242.2660745589. The cubic root of 1543225 is about 115.5605898872.

Adding to 1543225 its reverse (5223451), we get a palindrome (6766676).

The spelling of 1543225 in words is "one million, five hundred forty-three thousand, two hundred twenty-five".