53526521 has 8 divisors (see below), whose sum is σ = 54225600. Its totient is φ = 52831440.

The previous prime is 53526461. The next prime is 53526527. The reversal of 53526521 is 12562535.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53526521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53526527) 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, 33110 + ... + 34688.

It is an arithmetic number, because the mean of its divisors is an integer number (6778200).

Almost surely, 2^53526521 is an apocalyptic number.

It is an amenable number.

53526521 is a deficient number, since it is larger than the sum of its proper divisors (699079).

53526521 is a wasteful number, since it uses less digits than its factorization.

53526521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999.

The product of its digits is 9000, while the sum is 29.

The square root of 53526521 is about 7316.1821327794. The cubic root of 53526521 is about 376.8683552774.

The spelling of 53526521 in words is "fifty-three million, five hundred twenty-six thousand, five hundred twenty-one".