1323855 has 48 divisors (see below), whose sum is σ = 2585856. Its totient is φ = 622080.

The previous prime is 1323851. The next prime is 1323869. The reversal of 1323855 is 5583231.

It is not a de Polignac number, because 1323855 - 2² = 1323851 is a prime.

It is a super-2 number, since 2×1323855² = 3505184122050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18099 + ... + 18171.

It is an arithmetic number, because the mean of its divisors is an integer number (53872).

2^1323855 is an apocalyptic number.

1323855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1323855 is a deficient number, since it is larger than the sum of its proper divisors (1262001).

1323855 is a wasteful number, since it uses less digits than its factorization.

1323855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 125 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1323855 is about 1150.5889796100. The cubic root of 1323855 is about 109.8028147825.

The spelling of 1323855 in words is "one million, three hundred twenty-three thousand, eight hundred fifty-five".