52248321 has 10 divisors (see below), whose sum is σ = 78050082. Its totient is φ = 34832160.

The previous prime is 52248319. The next prime is 52248323. The reversal of 52248321 is 12384225.

52248321 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 (52248319) and next prime (52248323).

It can be written as a sum of positive squares in only one way, i.e., 51840000 + 408321 = 7200^2 + 639^2 .

It is not a de Polignac number, because 52248321 - 2¹ = 52248319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (52248323) 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 9 ways as a sum of consecutive naturals, for example, 322440 + ... + 322601.

Almost surely, 2^52248321 is an apocalyptic number.

It is an amenable number.

52248321 is a deficient number, since it is larger than the sum of its proper divisors (25801761).

52248321 is an equidigital number, since it uses as much as digits as its factorization.

52248321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645053 (or 645044 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 52248321 is about 7228.3000076090. The cubic root of 52248321 is about 373.8443140320.

The spelling of 52248321 in words is "fifty-two million, two hundred forty-eight thousand, three hundred twenty-one".