53827221 has 12 divisors (see below), whose sum is σ = 82073696. Its totient is φ = 30739200.

The previous prime is 53827217. The next prime is 53827283. The reversal of 53827221 is 12272835.

It is not a de Polignac number, because 53827221 - 2² = 53827217 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 (53827021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32821 + ... + 34421.

Almost surely, 2^53827221 is an apocalyptic number.

It is an amenable number.

53827221 is a deficient number, since it is larger than the sum of its proper divisors (28246475).

53827221 is an frugal number, since it uses more digits than its factorization.

53827221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212 (or 1611 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 53827221 is about 7336.7036876243. The cubic root of 53827221 is about 377.5727585150.

The spelling of 53827221 in words is "fifty-three million, eight hundred twenty-seven thousand, two hundred twenty-one".