51533648 has 20 divisors (see below), whose sum is σ = 100097760. Its totient is φ = 25701984.

The previous prime is 51533641. The next prime is 51533659. The reversal of 51533648 is 84633515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51533641) by changing a digit.

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, 2861 + ... + 10547.

It is an arithmetic number, because the mean of its divisors is an integer number (5004888).

Almost surely, 2^51533648 is an apocalyptic number.

It is an amenable number.

51533648 is a deficient number, since it is larger than the sum of its proper divisors (48564112).

51533648 is a wasteful number, since it uses less digits than its factorization.

51533648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8114 (or 8108 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 51533648 is about 7178.6940316467. The cubic root of 51533648 is about 372.1319530349.

The spelling of 51533648 in words is "fifty-one million, five hundred thirty-three thousand, six hundred forty-eight".