53425728 has 42 divisors (see below), whose sum is σ = 153136854. Its totient is φ = 17808384.

The previous prime is 53425709. The next prime is 53425759. The reversal of 53425728 is 82752435.

It can be written as a sum of positive squares in only one way, i.e., 42614784 + 10810944 = 6528^2 + 3288^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 53425692 and 53425701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45801 + ... + 46952.

Almost surely, 2^53425728 is an apocalyptic number.

It is an amenable number.

53425728 is an abundant number, since it is smaller than the sum of its proper divisors (99711126).

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

53425728 is a wasteful number, since it uses less digits than its factorization.

53425728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92771 (or 92758 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 53425728 is about 7309.2905264465. The cubic root of 53425728 is about 376.6316529265.

It can be divided in two parts, 534 and 25728, that added together give a palindrome (26262).

The spelling of 53425728 in words is "fifty-three million, four hundred twenty-five thousand, seven hundred twenty-eight".