51403224 has 16 divisors (see below), whose sum is σ = 128508120. Its totient is φ = 17134400.

The previous prime is 51403207. The next prime is 51403273. The reversal of 51403224 is 42230415.

It is a self number, because there is not a number n which added to its sum of digits gives 51403224.

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, 1070877 + ... + 1070924.

Almost surely, 2^51403224 is an apocalyptic number.

It is an amenable number.

51403224 is an abundant number, since it is smaller than the sum of its proper divisors (77104896).

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

51403224 is a wasteful number, since it uses less digits than its factorization.

51403224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141810 (or 2141806 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 51403224 is about 7169.6041731744. The cubic root of 51403224 is about 371.8177509404.

Adding to 51403224 its reverse (42230415), we get a palindrome (93633639).

The spelling of 51403224 in words is "fifty-one million, four hundred three thousand, two hundred twenty-four".