51798528 has 100 divisors (see below), whose sum is σ = 154728750. Its totient is φ = 17252352.

The previous prime is 51798511. The next prime is 51798529. The reversal of 51798528 is 82589715.

It is a happy number.

51798528 is a `hidden beast` number, since 51 + 79 + 8 + 528 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45805824 + 5992704 = 6768^2 + 2448^2 .

It is not an unprimeable number, because it can be changed into a prime (51798529) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40848 + ... + 42096.

Almost surely, 2^51798528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51798528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77364375).

51798528 is an abundant number, since it is smaller than the sum of its proper divisors (102930222).

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

51798528 is an equidigital number, since it uses as much as digits as its factorization.

51798528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279 (or 1254 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 51798528 is about 7197.1194237695. The cubic root of 51798528 is about 372.7684427474.

It can be divided in two parts, 51798 and 528, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 51798528 in words is "fifty-one million, seven hundred ninety-eight thousand, five hundred twenty-eight".