1323553 has 8 divisors (see below), whose sum is σ = 1650240. Its totient is φ = 1031280.

The previous prime is 1323551. The next prime is 1323571. The reversal of 1323553 is 3553231.

It is a happy number.

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 1323553 - 2¹ = 1323551 is a prime.

It is an Ulam number.

It is a Duffinian number.

1323553 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1323551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8518 + ... + 8671.

It is an arithmetic number, because the mean of its divisors is an integer number (206280).

2^1323553 is an apocalyptic number.

It is an amenable number.

1323553 is a deficient number, since it is larger than the sum of its proper divisors (326687).

1323553 is a wasteful number, since it uses less digits than its factorization.

1323553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17207.

The product of its digits is 1350, while the sum is 22.

The square root of 1323553 is about 1150.4577349907. The cubic root of 1323553 is about 109.7944646807.

Adding to 1323553 its reverse (3553231), we get a palindrome (4876784).

It can be divided in two parts, 132 and 3553, that multiplied together give a triangular number (468996 = T₉₆₈).

The spelling of 1323553 in words is "one million, three hundred twenty-three thousand, five hundred fifty-three".