53525040 has 80 divisors (see below), whose sum is σ = 167989248. Its totient is φ = 14096128.

The previous prime is 53525029. The next prime is 53525041. The reversal of 53525040 is 4052535.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 53525040.

It is not an unprimeable number, because it can be changed into a prime (53525041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18577 + ... + 21263.

Almost surely, 2^53525040 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 53525040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83994624).

53525040 is an abundant number, since it is smaller than the sum of its proper divisors (114464208).

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

53525040 is a wasteful number, since it uses less digits than its factorization.

53525040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786 (or 2780 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 53525040 is about 7316.0809180872. The cubic root of 53525040 is about 376.8648794479.

Adding to 53525040 its reverse (4052535), we get a palindrome (57577575).

The spelling of 53525040 in words is "fifty-three million, five hundred twenty-five thousand, forty".