51528472 has 32 divisors (see below), whose sum is σ = 99832320. Its totient is φ = 24917760.

The previous prime is 51528467. The next prime is 51528473. The reversal of 51528472 is 27482515.

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51528473) 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, 41038 + ... + 42274.

It is an arithmetic number, because the mean of its divisors is an integer number (3119760).

Almost surely, 2^51528472 is an apocalyptic number.

It is an amenable number.

51528472 is a deficient number, since it is larger than the sum of its proper divisors (48303848).

51528472 is a wasteful number, since it uses less digits than its factorization.

51528472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411 (or 1407 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

The square root of 51528472 is about 7178.3335113381. Note that the first 3 decimals coincide. The cubic root of 51528472 is about 372.1194937353.

The spelling of 51528472 in words is "fifty-one million, five hundred twenty-eight thousand, four hundred seventy-two".