1363257 has 16 divisors (see below), whose sum is σ = 2308480. Its totient is φ = 778896.

The previous prime is 1363223. The next prime is 1363259. The reversal of 1363257 is 7523631.

It is a happy number.

It is not a de Polignac number, because 1363257 - 2¹² = 1359161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 1 + 3⁵ + 6⁵ + 3¹² + 2⁷ + 5³ + 7⁷ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1363257.

It is not an unprimeable number, because it can be changed into a prime (1363259) 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 15 ways as a sum of consecutive naturals, for example, 3418 + ... + 3795.

It is an arithmetic number, because the mean of its divisors is an integer number (144280).

2^1363257 is an apocalyptic number.

It is an amenable number.

1363257 is a deficient number, since it is larger than the sum of its proper divisors (945223).

1363257 is an equidigital number, since it uses as much as digits as its factorization.

1363257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7229 (or 7223 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 1363257 is about 1167.5859711387. The cubic root of 1363257 is about 110.8815390709.

Adding to 1363257 its reverse (7523631), we get a palindrome (8886888).

It can be divided in two parts, 13632 and 57, that added together give a square (13689 = 117²).

The spelling of 1363257 in words is "one million, three hundred sixty-three thousand, two hundred fifty-seven".