53827021 has 2 divisors, whose sum is σ = 53827022. Its totient is φ = 53827020.

The previous prime is 53827009. The next prime is 53827027. The reversal of 53827021 is 12072835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53655625 + 171396 = 7325^2 + 414^2 .

It is a cyclic number.

It is not a de Polignac number, because 53827021 - 2²¹ = 51729869 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53827027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26913510 + 26913511.

It is an arithmetic number, because the mean of its divisors is an integer number (26913511).

Almost surely, 2^53827021 is an apocalyptic number.

It is an amenable number.

53827021 is a deficient number, since it is larger than the sum of its proper divisors (1).

53827021 is an equidigital number, since it uses as much as digits as its factorization.

53827021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 53827021 is about 7336.6900575123. The cubic root of 53827021 is about 377.5722908790.

Adding to 53827021 its reverse (12072835), we get a palindrome (65899856).

It can be divided in two parts, 5382 and 7021, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 53827021 in words is "fifty-three million, eight hundred twenty-seven thousand, twenty-one".