1215163 has 4 divisors (see below), whose sum is σ = 1218280. Its totient is φ = 1212048.

The previous prime is 1215161. The next prime is 1215167. The reversal of 1215163 is 3615121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3615121 = 1481 ⋅2441.

It is a cyclic number.

It is not a de Polignac number, because 1215163 - 2¹ = 1215161 is a prime.

It is a super-2 number, since 2×1215163² = 2953242233138, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1215163.

It is not an unprimeable number, because it can be changed into a prime (1215161) 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 3 ways as a sum of consecutive naturals, for example, 873 + ... + 1786.

It is an arithmetic number, because the mean of its divisors is an integer number (304570).

2^1215163 is an apocalyptic number.

1215163 is a deficient number, since it is larger than the sum of its proper divisors (3117).

1215163 is an equidigital number, since it uses as much as digits as its factorization.

1215163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116.

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

The square root of 1215163 is about 1102.3443200743. The cubic root of 1215163 is about 106.7115707206.

It can be divided in two parts, 1215 and 163, that added together give a triangular number (1378 = T₅₂).

The spelling of 1215163 in words is "one million, two hundred fifteen thousand, one hundred sixty-three".