51230224 has 20 divisors (see below), whose sum is σ = 101133036. Its totient is φ = 25131392.

The previous prime is 51230219. The next prime is 51230261. The reversal of 51230224 is 42203215.

It can be written as a sum of positive squares in 2 ways, for example, as 41370624 + 9859600 = 6432^2 + 3140^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 29359 + ... + 31054.

Almost surely, 2^51230224 is an apocalyptic number.

It is an amenable number.

51230224 is a deficient number, since it is larger than the sum of its proper divisors (49902812).

51230224 is a wasteful number, since it uses less digits than its factorization.

51230224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60474 (or 60468 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 51230224 is about 7157.5291826160. The cubic root of 51230224 is about 371.4001586606.

Adding to 51230224 its reverse (42203215), we get a palindrome (93433439).

The spelling of 51230224 in words is "fifty-one million, two hundred thirty thousand, two hundred twenty-four".