523145224 has 32 divisors (see below), whose sum is σ = 1147101120. Its totient is φ = 218990016.

The previous prime is 523145219. The next prime is 523145237. The reversal of 523145224 is 422541325.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 523145192 and 523145201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106219 + ... + 111034.

It is an arithmetic number, because the mean of its divisors is an integer number (35846910).

Almost surely, 2^523145224 is an apocalyptic number.

It is an amenable number.

523145224 is an abundant number, since it is smaller than the sum of its proper divisors (623955896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523145224 is a wasteful number, since it uses less digits than its factorization.

523145224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217309 (or 217305 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 523145224 is about 22872.3681327492. The cubic root of 523145224 is about 805.7631865693.

Adding to 523145224 its reverse (422541325), we get a palindrome (945686549).

The spelling of 523145224 in words is "five hundred twenty-three million, one hundred forty-five thousand, two hundred twenty-four".