51528480 has 48 divisors (see below), whose sum is σ = 162316224. Its totient is φ = 13740800.

The previous prime is 51528473. The next prime is 51528481. The reversal of 51528480 is 8482515.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×51528480² = 5310368502220800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51528481) 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, 53196 + ... + 54155.

It is an arithmetic number, because the mean of its divisors is an integer number (3381588).

Almost surely, 2^51528480 is an apocalyptic number.

It is an amenable number.

51528480 is an abundant number, since it is smaller than the sum of its proper divisors (110787744).

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

51528480 is a wasteful number, since it uses less digits than its factorization.

51528480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107369 (or 107361 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 51528480 is about 7178.3340685705. The cubic root of 51528480 is about 372.1195129930.

The spelling of 51528480 in words is "fifty-one million, five hundred twenty-eight thousand, four hundred eighty".