1440557 has 2 divisors, whose sum is σ = 1440558. Its totient is φ = 1440556.

The previous prime is 1440553. The next prime is 1440577. The reversal of 1440557 is 7550441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1394761 + 45796 = 1181^2 + 214^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440557 - 2² = 1440553 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720278 + 720279.

It is an arithmetic number, because the mean of its divisors is an integer number (720279).

2^1440557 is an apocalyptic number.

It is an amenable number.

1440557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440557 is an equidigital number, since it uses as much as digits as its factorization.

1440557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 1440557 is about 1200.2320608949. The cubic root of 1440557 is about 112.9388815074.

Adding to 1440557 its reverse (7550441), we get a palindrome (8990998).

The spelling of 1440557 in words is "one million, four hundred forty thousand, five hundred fifty-seven".