1520323 has 24 divisors (see below), whose sum is σ = 1969920. Its totient is φ = 1164240.

The previous prime is 1520291. The next prime is 1520329. The reversal of 1520323 is 3230251.

It is not a de Polignac number, because 1520323 - 2⁵ = 1520291 is a prime.

It is a super-2 number, since 2×1520323² = 4622764048658, which contains 22 as substring.

1520323 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1520297 and 1520306.

It is not an unprimeable number, because it can be changed into a prime (1520329) 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 23 ways as a sum of consecutive naturals, for example, 21378 + ... + 21448.

It is an arithmetic number, because the mean of its divisors is an integer number (82080).

2^1520323 is an apocalyptic number.

1520323 is a deficient number, since it is larger than the sum of its proper divisors (449597).

1520323 is a wasteful number, since it uses less digits than its factorization.

1520323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 1520323 is about 1233.0137874331. The cubic root of 1520323 is about 114.9860852729.

Adding to 1520323 its reverse (3230251), we get a palindrome (4750574).

The spelling of 1520323 in words is "one million, five hundred twenty thousand, three hundred twenty-three".