53257517 has 8 divisors (see below), whose sum is σ = 54027000. Its totient is φ = 52493824.

The previous prime is 53257499. The next prime is 53257537. The reversal of 53257517 is 71575235.

53257517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2292196 + 50965321 = 1514^2 + 7139^2 .

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 53257517 - 2⁸ = 53257261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53257537) 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, 19109 + ... + 21717.

It is an arithmetic number, because the mean of its divisors is an integer number (6753375).

Almost surely, 2^53257517 is an apocalyptic number.

It is an amenable number.

53257517 is a deficient number, since it is larger than the sum of its proper divisors (769483).

53257517 is a wasteful number, since it uses less digits than its factorization.

53257517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895.

The product of its digits is 36750, while the sum is 35.

The square root of 53257517 is about 7297.7747978408. The cubic root of 53257517 is about 376.2359622140.

The spelling of 53257517 in words is "fifty-three million, two hundred fifty-seven thousand, five hundred seventeen".