52235621 has 2 divisors, whose sum is σ = 52235622. Its totient is φ = 52235620.

The previous prime is 52235597. The next prime is 52235629. The reversal of 52235621 is 12653225.

52235621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26368225 + 25867396 = 5135^2 + 5086^2 .

It is a cyclic number.

It is not a de Polignac number, because 52235621 - 2²² = 48041317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52235629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26117810 + 26117811.

It is an arithmetic number, because the mean of its divisors is an integer number (26117811).

Almost surely, 2^52235621 is an apocalyptic number.

It is an amenable number.

52235621 is a deficient number, since it is larger than the sum of its proper divisors (1).

52235621 is an equidigital number, since it uses as much as digits as its factorization.

52235621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 26.

The square root of 52235621 is about 7227.4214627348. The cubic root of 52235621 is about 373.8140214635.

Adding to 52235621 its reverse (12653225), we get a palindrome (64888846).

The spelling of 52235621 in words is "fifty-two million, two hundred thirty-five thousand, six hundred twenty-one".