1440553 has 2 divisors, whose sum is σ = 1440554. Its totient is φ = 1440552.

The previous prime is 1440533. The next prime is 1440557. The reversal of 1440553 is 3550441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1432809 + 7744 = 1197^2 + 88^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440557) 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 as a sum of consecutive naturals, namely, 720276 + 720277.

It is an arithmetic number, because the mean of its divisors is an integer number (720277).

2^1440553 is an apocalyptic number.

It is an amenable number.

1440553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440553 is an equidigital number, since it uses as much as digits as its factorization.

1440553 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1440553 is about 1200.2303945493. The cubic root of 1440553 is about 112.9387769747.

Adding to 1440553 its reverse (3550441), we get a palindrome (4990994).

The spelling of 1440553 in words is "one million, four hundred forty thousand, five hundred fifty-three".