505243224 has 32 divisors (see below), whose sum is σ = 1403454000. Its totient is φ = 168414336.

The previous prime is 505243217. The next prime is 505243229. The reversal of 505243224 is 422342505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505243229) 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, 1169329 + ... + 1169760.

Almost surely, 2^505243224 is an apocalyptic number.

505243224 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

505243224 is an abundant number, since it is smaller than the sum of its proper divisors (898210776).

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

505243224 is a wasteful number, since it uses less digits than its factorization.

505243224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339104 (or 2339094 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 505243224 is about 22477.6160657664. The cubic root of 505243224 is about 796.4652507707.

Adding to 505243224 its reverse (422342505), we get a palindrome (927585729).

The spelling of 505243224 in words is "five hundred five million, two hundred forty-three thousand, two hundred twenty-four".