1216153 has 4 divisors (see below), whose sum is σ = 1249060. Its totient is φ = 1183248.

The previous prime is 1216151. The next prime is 1216177. The reversal of 1216153 is 3516121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 915849 + 300304 = 957^2 + 548^2 .

It is a cyclic number.

It is not a de Polignac number, because 1216153 - 2¹ = 1216151 is a prime.

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 1216153.

It is not an unprimeable number, because it can be changed into a prime (1216151) 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, 16398 + ... + 16471.

It is an arithmetic number, because the mean of its divisors is an integer number (312265).

2^1216153 is an apocalyptic number.

It is an amenable number.

1216153 is a deficient number, since it is larger than the sum of its proper divisors (32907).

1216153 is an equidigital number, since it uses as much as digits as its factorization.

1216153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32906.

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

The square root of 1216153 is about 1102.7932716516. The cubic root of 1216153 is about 106.7405423560.

Subtracting 1216153 from its reverse (3516121), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 1216 and 153, that added together give a square (1369 = 37²).

The spelling of 1216153 in words is "one million, two hundred sixteen thousand, one hundred fifty-three".