53521717 has 8 divisors (see below), whose sum is σ = 56028672. Its totient is φ = 51063600.

The previous prime is 53521709. The next prime is 53521723. The reversal of 53521717 is 71712535.

53521717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 53521717 - 2³ = 53521709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53521757) 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 7 ways as a sum of consecutive naturals, for example, 9958 + ... + 14359.

It is an arithmetic number, because the mean of its divisors is an integer number (7003584).

Almost surely, 2^53521717 is an apocalyptic number.

It is an amenable number.

53521717 is a deficient number, since it is larger than the sum of its proper divisors (2506955).

53521717 is a wasteful number, since it uses less digits than its factorization.

53521717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24419.

The product of its digits is 7350, while the sum is 31.

The square root of 53521717 is about 7315.8538120988. The cubic root of 53521717 is about 376.8570803075.

The spelling of 53521717 in words is "fifty-three million, five hundred twenty-one thousand, seven hundred seventeen".