53452521 has 8 divisors (see below), whose sum is σ = 79188960. Its totient is φ = 35634996.

The previous prime is 53452519. The next prime is 53452523. The reversal of 53452521 is 12525435.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53452519) and next prime (53452523).

It is not a de Polignac number, because 53452521 - 2¹ = 53452519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1979723 = 53452521 / (5 + 3 + 4 + 5 + 2 + 5 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (53452523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989835 + ... + 989888.

It is an arithmetic number, because the mean of its divisors is an integer number (9898620).

Almost surely, 2^53452521 is an apocalyptic number.

It is an amenable number.

53452521 is a deficient number, since it is larger than the sum of its proper divisors (25736439).

53452521 is a wasteful number, since it uses less digits than its factorization.

53452521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979732 (or 1979726 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 53452521 is about 7311.1231011384. The cubic root of 53452521 is about 376.6946026565.

Adding to 53452521 its reverse (12525435), we get a palindrome (65977956).

The spelling of 53452521 in words is "fifty-three million, four hundred fifty-two thousand, five hundred twenty-one".