1521223 has 8 divisors (see below), whose sum is σ = 1700496. Its totient is φ = 1348800.

The previous prime is 1521217. The next prime is 1521227. The reversal of 1521223 is 3221251.

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 1521223 - 2⁹ = 1520711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1521197 and 1521206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236 + ... + 2137.

It is an arithmetic number, because the mean of its divisors is an integer number (212562).

2^1521223 is an apocalyptic number.

1521223 is a deficient number, since it is larger than the sum of its proper divisors (179273).

1521223 is a wasteful number, since it uses less digits than its factorization.

1521223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425.

The product of its digits is 120, while the sum is 16.

The square root of 1521223 is about 1233.3786928596. The cubic root of 1521223 is about 115.0087705976.

Adding to 1521223 its reverse (3221251), we get a palindrome (4742474).

The spelling of 1521223 in words is "one million, five hundred twenty-one thousand, two hundred twenty-three".