53853221 has 2 divisors, whose sum is σ = 53853222. Its totient is φ = 53853220.

The previous prime is 53853199. The next prime is 53853227. The reversal of 53853221 is 12235835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44702596 + 9150625 = 6686^2 + 3025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53853221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53853227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26926610 + 26926611.

It is an arithmetic number, because the mean of its divisors is an integer number (26926611).

Almost surely, 2^53853221 is an apocalyptic number.

It is an amenable number.

53853221 is a deficient number, since it is larger than the sum of its proper divisors (1).

53853221 is an equidigital number, since it uses as much as digits as its factorization.

53853221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 53853221 is about 7338.4753866181. The cubic root of 53853221 is about 377.6335413392.

The spelling of 53853221 in words is "fifty-three million, eight hundred fifty-three thousand, two hundred twenty-one".