51533448 has 32 divisors (see below), whose sum is σ = 129029760. Its totient is φ = 17151680.

The previous prime is 51533441. The next prime is 51533459. The reversal of 51533448 is 84433515.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51533441) 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, 20686 + ... + 23042.

It is an arithmetic number, because the mean of its divisors is an integer number (4032180).

Almost surely, 2^51533448 is an apocalyptic number.

It is an amenable number.

51533448 is an abundant number, since it is smaller than the sum of its proper divisors (77496312).

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

51533448 is a wasteful number, since it uses less digits than its factorization.

51533448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277 (or 3273 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 51533448 is about 7178.6801015228. The cubic root of 51533448 is about 372.1314716246.

The spelling of 51533448 in words is "fifty-one million, five hundred thirty-three thousand, four hundred forty-eight".