53886221 has 4 divisors (see below), whose sum is σ = 54380700. Its totient is φ = 53391744.

The previous prime is 53886211. The next prime is 53886247. The reversal of 53886221 is 12268835.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41538025 + 12348196 = 6445^2 + 3514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53886221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53886211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247076 + ... + 247293.

It is an arithmetic number, because the mean of its divisors is an integer number (13595175).

Almost surely, 2^53886221 is an apocalyptic number.

It is an amenable number.

53886221 is a deficient number, since it is larger than the sum of its proper divisors (494479).

53886221 is a wasteful number, since it uses less digits than its factorization.

53886221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494478.

The product of its digits is 23040, while the sum is 35.

The square root of 53886221 is about 7340.7234657083. The cubic root of 53886221 is about 377.7106606031.

The spelling of 53886221 in words is "fifty-three million, eight hundred eighty-six thousand, two hundred twenty-one".