1215359 has 2 divisors, whose sum is σ = 1215360. Its totient is φ = 1215358.

The previous prime is 1215349. The next prime is 1215367. The reversal of 1215359 is 9535121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1215359 - 2⁸ = 1215103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607679 + 607680.

It is an arithmetic number, because the mean of its divisors is an integer number (607680).

2^1215359 is an apocalyptic number.

1215359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215359 is an equidigital number, since it uses as much as digits as its factorization.

1215359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 26.

The square root of 1215359 is about 1102.4332179320. The cubic root of 1215359 is about 106.7173077680.

The spelling of 1215359 in words is "one million, two hundred fifteen thousand, three hundred fifty-nine".