51768528 has 40 divisors (see below), whose sum is σ = 152841408. Its totient is φ = 14790912.

The previous prime is 51768523. The next prime is 51768529. The reversal of 51768528 is 82586715.

51768528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 51768528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51768523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76701 + ... + 77372.

Almost surely, 2^51768528 is an apocalyptic number.

It is an amenable number.

51768528 is an abundant number, since it is smaller than the sum of its proper divisors (101072880).

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

51768528 is a wasteful number, since it uses less digits than its factorization.

51768528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154091 (or 154085 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 51768528 is about 7195.0349547448. The cubic root of 51768528 is about 372.6964637848.

The spelling of 51768528 in words is "fifty-one million, seven hundred sixty-eight thousand, five hundred twenty-eight".