1550441 has 2 divisors, whose sum is σ = 1550442. Its totient is φ = 1550440.

The previous prime is 1550431. The next prime is 1550443. The reversal of 1550441 is 1440551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1510441 + 40000 = 1229^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1550441 - 2⁶ = 1550377 is a prime.

Together with 1550443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1550443) 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 as a sum of consecutive naturals, namely, 775220 + 775221.

It is an arithmetic number, because the mean of its divisors is an integer number (775221).

2^1550441 is an apocalyptic number.

It is an amenable number.

1550441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550441 is an equidigital number, since it uses as much as digits as its factorization.

1550441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1550441 is about 1245.1670570650. The cubic root of 1550441 is about 115.7404273175.

Adding to 1550441 its reverse (1440551), we get a palindrome (2990992).

It can be divided in two parts, 1550 and 441, that added together give a palindrome (1991).

The spelling of 1550441 in words is "one million, five hundred fifty thousand, four hundred forty-one".