52555428 has 18 divisors (see below), whose sum is σ = 132848534. Its totient is φ = 17518464.

The previous prime is 52555427. The next prime is 52555439. The reversal of 52555428 is 82455525.

It is a happy number.

52555428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 45805824 + 6749604 = 6768^2 + 2598^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1459873 = 52555428 / (5 + 2 + 5 + 5 + 5 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 52555392 and 52555401.

It is not an unprimeable number, because it can be changed into a prime (52555423) 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 5 ways as a sum of consecutive naturals, for example, 729901 + ... + 729972.

Almost surely, 2^52555428 is an apocalyptic number.

It is an amenable number.

52555428 is an abundant number, since it is smaller than the sum of its proper divisors (80293106).

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

52555428 is a wasteful number, since it uses less digits than its factorization.

52555428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459883 (or 1459878 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The square root of 52555428 is about 7249.5122594558. The cubic root of 52555428 is about 374.5753486381.

The spelling of 52555428 in words is "fifty-two million, five hundred fifty-five thousand, four hundred twenty-eight".