53238287 has 8 divisors (see below), whose sum is σ = 55695600. Its totient is φ = 50822464.

The previous prime is 53238281. The next prime is 53238293. The reversal of 53238287 is 78283235.

53238287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (53238281) and next prime (53238293).

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 53238287 - 2¹⁰ = 53237263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53238287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53238281) 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, 7733 + ... + 12894.

It is an arithmetic number, because the mean of its divisors is an integer number (6961950).

Almost surely, 2^53238287 is an apocalyptic number.

53238287 is a deficient number, since it is larger than the sum of its proper divisors (2457313).

53238287 is a wasteful number, since it uses less digits than its factorization.

53238287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20745.

The product of its digits is 80640, while the sum is 38.

The square root of 53238287 is about 7296.4571539892. The cubic root of 53238287 is about 376.1906735303.

The spelling of 53238287 in words is "fifty-three million, two hundred thirty-eight thousand, two hundred eighty-seven".