1215233 has 4 divisors (see below), whose sum is σ = 1217748. Its totient is φ = 1212720.

The previous prime is 1215229. The next prime is 1215239. The reversal of 1215233 is 3325121.

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 85264 + 1129969 = 292^2 + 1063^2 .

It is a cyclic number.

It is not a de Polignac number, because 1215233 - 2² = 1215229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278 + ... + 1583.

It is an arithmetic number, because the mean of its divisors is an integer number (304437).

2^1215233 is an apocalyptic number.

It is an amenable number.

1215233 is a deficient number, since it is larger than the sum of its proper divisors (2515).

1215233 is an equidigital number, since it uses as much as digits as its factorization.

1215233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514.

The product of its digits is 180, while the sum is 17.

The square root of 1215233 is about 1102.3760701321. The cubic root of 1215233 is about 106.7136197369.

The spelling of 1215233 in words is "one million, two hundred fifteen thousand, two hundred thirty-three".