53246221 has 4 divisors (see below), whose sum is σ = 60852832. Its totient is φ = 45639612.

The previous prime is 53246203. The next prime is 53246239. The reversal of 53246221 is 12264235.

53246221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (53246203) and next prime (53246239).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53246221 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 (53246201) 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 3 ways as a sum of consecutive naturals, for example, 3803295 + ... + 3803308.

It is an arithmetic number, because the mean of its divisors is an integer number (15213208).

Almost surely, 2^53246221 is an apocalyptic number.

It is an amenable number.

53246221 is a deficient number, since it is larger than the sum of its proper divisors (7606611).

53246221 is an equidigital number, since it uses as much as digits as its factorization.

53246221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7606610.

The product of its digits is 2880, while the sum is 25.

The square root of 53246221 is about 7297.0008222557. Note that the first 3 decimals coincide. The cubic root of 53246221 is about 376.2093602607.

The spelling of 53246221 in words is "fifty-three million, two hundred forty-six thousand, two hundred twenty-one".