1223505 has 48 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 606528.

The previous prime is 1223491. The next prime is 1223527. The reversal of 1223505 is 5053221.

It is a happy number.

It is not a de Polignac number, because 1223505 - 2⁴ = 1223489 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23059 + ... + 23111.

It is an arithmetic number, because the mean of its divisors is an integer number (49140).

2^1223505 is an apocalyptic number.

1223505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1223505 is a deficient number, since it is larger than the sum of its proper divisors (1135215).

1223505 is an equidigital number, since it uses as much as digits as its factorization.

1223505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1223505 is about 1106.1216027183. The cubic root of 1223505 is about 106.9552029556.

Adding to 1223505 its reverse (5053221), we get a palindrome (6276726).

It can be divided in two parts, 1223 and 505, that added together give a cube (1728 = 12³).

The spelling of 1223505 in words is "one million, two hundred twenty-three thousand, five hundred five".