1215361 has 8 divisors (see below), whose sum is σ = 1437120. Its totient is φ = 1005648.

The previous prime is 1215359. The next prime is 1215367. The reversal of 1215361 is 1635121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1215361 - 2¹ = 1215359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2791 + ... + 3196.

It is an arithmetic number, because the mean of its divisors is an integer number (179640).

2^1215361 is an apocalyptic number.

It is an amenable number.

1215361 is a deficient number, since it is larger than the sum of its proper divisors (221759).

1215361 is an equidigital number, since it uses as much as digits as its factorization.

1215361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023.

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

The square root of 1215361 is about 1102.4341250161. The cubic root of 1215361 is about 106.7173663062.

The spelling of 1215361 in words is "one million, two hundred fifteen thousand, three hundred sixty-one".