53522621 has 2 divisors, whose sum is σ = 53522622. Its totient is φ = 53522620.

The previous prime is 53522591. The next prime is 53522629. The reversal of 53522621 is 12622535.

53522621 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., 46308025 + 7214596 = 6805^2 + 2686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53522621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53522629) 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, 26761310 + 26761311.

It is an arithmetic number, because the mean of its divisors is an integer number (26761311).

Almost surely, 2^53522621 is an apocalyptic number.

It is an amenable number.

53522621 is a deficient number, since it is larger than the sum of its proper divisors (1).

53522621 is an equidigital number, since it uses as much as digits as its factorization.

53522621 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 53522621 is about 7315.9155954672. The cubic root of 53522621 is about 376.8592020436.

The spelling of 53522621 in words is "fifty-three million, five hundred twenty-two thousand, six hundred twenty-one".