53226521 has 4 divisors (see below), whose sum is σ = 53241600. Its totient is φ = 53211444.

The previous prime is 53226497. The next prime is 53226527. The reversal of 53226521 is 12562235.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 53226521 - 2⁶ = 53226457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53226527) 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 3 ways as a sum of consecutive naturals, for example, 920 + ... + 10358.

It is an arithmetic number, because the mean of its divisors is an integer number (13310400).

Almost surely, 2^53226521 is an apocalyptic number.

It is an amenable number.

53226521 is a deficient number, since it is larger than the sum of its proper divisors (15079).

53226521 is an equidigital number, since it uses as much as digits as its factorization.

53226521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15078.

The product of its digits is 3600, while the sum is 26.

The square root of 53226521 is about 7295.6508277192. The cubic root of 53226521 is about 376.1629579780.

Adding to 53226521 its reverse (12562235), we get a palindrome (65788756).

The spelling of 53226521 in words is "fifty-three million, two hundred twenty-six thousand, five hundred twenty-one".