1441247257 has 12 divisors (see below), whose sum is σ = 1498019940. Its totient is φ = 1386533280.

The previous prime is 1441247237. The next prime is 1441247287. The reversal of 1441247257 is 7527421441.

It can be written as a sum of positive squares in 2 ways, for example, as 1017546201 + 423701056 = 31899^2 + 20584^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1441247257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1441247207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161919 + ... + 170587.

It is an arithmetic number, because the mean of its divisors is an integer number (124834995).

Almost surely, 2^1441247257 is an apocalyptic number.

It is an amenable number.

1441247257 is a deficient number, since it is larger than the sum of its proper divisors (56772683).

1441247257 is an equidigital number, since it uses as much as digits as its factorization.

1441247257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8904 (or 8873 counting only the distinct ones).

The product of its digits is 62720, while the sum is 37.

The square root of 1441247257 is about 37963.7624189173. The cubic root of 1441247257 is about 1129.5691721756.

Adding to 1441247257 its reverse (7527421441), we get a palindrome (8968668698).

The spelling of 1441247257 in words is "one billion, four hundred forty-one million, two hundred forty-seven thousand, two hundred fifty-seven".