1329523 has 6 divisors (see below), whose sum is σ = 1439844. Its totient is φ = 1227096.

The previous prime is 1329509. The next prime is 1329529. The reversal of 1329523 is 3259231.

It is a happy number.

It is not a de Polignac number, because 1329523 - 2⁹ = 1329011 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (1329529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3765 + ... + 4102.

It is an arithmetic number, because the mean of its divisors is an integer number (239974).

2^1329523 is an apocalyptic number.

1329523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1329523 is a deficient number, since it is larger than the sum of its proper divisors (110321).

1329523 is an equidigital number, since it uses as much as digits as its factorization.

1329523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893 (or 7880 counting only the distinct ones).

The product of its digits is 1620, while the sum is 25.

The square root of 1329523 is about 1153.0494351935. The cubic root of 1329523 is about 109.9592962348.

The spelling of 1329523 in words is "one million, three hundred twenty-nine thousand, five hundred twenty-three".