53200621 has 2 divisors, whose sum is σ = 53200622. Its totient is φ = 53200620.

The previous prime is 53200607. The next prime is 53200661. The reversal of 53200621 is 12600235.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43744996 + 9455625 = 6614^2 + 3075^2 .

It is a cyclic number.

It is not a de Polignac number, because 53200621 - 2⁹ = 53200109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53200661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26600310 + 26600311.

It is an arithmetic number, because the mean of its divisors is an integer number (26600311).

Almost surely, 2^53200621 is an apocalyptic number.

It is an amenable number.

53200621 is a deficient number, since it is larger than the sum of its proper divisors (1).

53200621 is an equidigital number, since it uses as much as digits as its factorization.

53200621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 53200621 is about 7293.8755816095. The cubic root of 53200621 is about 376.1019345063.

Adding to 53200621 its reverse (12600235), we get a palindrome (65800856).

The spelling of 53200621 in words is "fifty-three million, two hundred thousand, six hundred twenty-one".