53245530 has 96 divisors (see below), whose sum is σ = 157916304. Its totient is φ = 12331008.

The previous prime is 53245471. The next prime is 53245559. The reversal of 53245530 is 3554235.

It can be written as a sum of positive squares in 8 ways, for example, as 6007401 + 47238129 = 2451^2 + 6873^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53245494 and 53245503.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18552 + ... + 21228.

Almost surely, 2^53245530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53245530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78958152).

53245530 is an abundant number, since it is smaller than the sum of its proper divisors (104670774).

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

53245530 is a wasteful number, since it uses less digits than its factorization.

53245530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720 (or 2717 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 53245530 is about 7296.9534738821. The cubic root of 53245530 is about 376.2077328413.

Adding to 53245530 its reverse (3554235), we get a palindrome (56799765).

The spelling of 53245530 in words is "fifty-three million, two hundred forty-five thousand, five hundred thirty".