53025521 has 4 divisors (see below), whose sum is σ = 53751972. Its totient is φ = 52299072.

The previous prime is 53025517. The next prime is 53025527. The reversal of 53025521 is 12552035.

53025521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9991921 + 43033600 = 3161^2 + 6560^2 .

It is a cyclic number.

It is not a de Polignac number, because 53025521 - 2² = 53025517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53025527) 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 3 ways as a sum of consecutive naturals, for example, 363116 + ... + 363261.

It is an arithmetic number, because the mean of its divisors is an integer number (13437993).

Almost surely, 2^53025521 is an apocalyptic number.

It is an amenable number.

53025521 is a deficient number, since it is larger than the sum of its proper divisors (726451).

53025521 is an equidigital number, since it uses as much as digits as its factorization.

53025521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726450.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 53025521 is about 7281.8624678031. The cubic root of 53025521 is about 375.6888576773.

Adding to 53025521 its reverse (12552035), we get a palindrome (65577556).

The spelling of 53025521 in words is "fifty-three million, twenty-five thousand, five hundred twenty-one".