1213255 has 8 divisors (see below), whose sum is σ = 1465632. Its totient is φ = 964128.

The previous prime is 1213253. The next prime is 1213259. The reversal of 1213255 is 5523121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213255 - 2¹ = 1213253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213253) 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, 109 + ... + 1561.

It is an arithmetic number, because the mean of its divisors is an integer number (183204).

2^1213255 is an apocalyptic number.

1213255 is a deficient number, since it is larger than the sum of its proper divisors (252377).

1213255 is a wasteful number, since it uses less digits than its factorization.

1213255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625.

The product of its digits is 300, while the sum is 19.

The square root of 1213255 is about 1101.4785517658. The cubic root of 1213255 is about 106.6556900597.

Adding to 1213255 its reverse (5523121), we get a palindrome (6736376).

The spelling of 1213255 in words is "one million, two hundred thirteen thousand, two hundred fifty-five".