1251163 has 4 divisors (see below), whose sum is σ = 1253560. Its totient is φ = 1248768.

The previous prime is 1251161. The next prime is 1251179. The reversal of 1251163 is 3611521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1251163 - 2¹ = 1251161 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 1251163.

It is not an unprimeable number, because it can be changed into a prime (1251161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45 + ... + 1582.

It is an arithmetic number, because the mean of its divisors is an integer number (313390).

2^1251163 is an apocalyptic number.

1251163 is a deficient number, since it is larger than the sum of its proper divisors (2397).

1251163 is an equidigital number, since it uses as much as digits as its factorization.

1251163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396.

The product of its digits is 180, while the sum is 19.

The square root of 1251163 is about 1118.5539772403. The cubic root of 1251163 is about 107.7551322466.

Adding to 1251163 its reverse (3611521), we get a palindrome (4862684).

The spelling of 1251163 in words is "one million, two hundred fifty-one thousand, one hundred sixty-three".