51223504 has 10 divisors (see below), whose sum is σ = 99245570. Its totient is φ = 25611744.

The previous prime is 51223451. The next prime is 51223511. The reversal of 51223504 is 40532215.

51223504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 51093904 + 129600 = 7148^2 + 360^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600719 + ... + 1600750.

It is an arithmetic number, because the mean of its divisors is an integer number (9924557).

Almost surely, 2^51223504 is an apocalyptic number.

It is an amenable number.

51223504 is a deficient number, since it is larger than the sum of its proper divisors (48022066).

51223504 is a wasteful number, since it uses less digits than its factorization.

51223504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201477 (or 3201471 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 51223504 is about 7157.0597314819. The cubic root of 51223504 is about 371.3839187798.

Adding to 51223504 its reverse (40532215), we get a palindrome (91755719).

The spelling of 51223504 in words is "fifty-one million, two hundred twenty-three thousand, five hundred four".