1500223 has 4 divisors (see below), whose sum is σ = 1520848. Its totient is φ = 1479600.

The previous prime is 1500181. The next prime is 1500229. The reversal of 1500223 is 3220051.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1500223 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 (1500229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10203 + ... + 10348.

It is an arithmetic number, because the mean of its divisors is an integer number (380212).

2^1500223 is an apocalyptic number.

1500223 is a deficient number, since it is larger than the sum of its proper divisors (20625).

1500223 is an equidigital number, since it uses as much as digits as its factorization.

1500223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20624.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 1500223 is about 1224.8359073770. The cubic root of 1500223 is about 114.4770966693.

Adding to 1500223 its reverse (3220051), we get a palindrome (4720274).

The spelling of 1500223 in words is "one million, five hundred thousand, two hundred twenty-three".