53561593 has 2 divisors, whose sum is σ = 53561594. Its totient is φ = 53561592.

The previous prime is 53561591. The next prime is 53561597. The reversal of 53561593 is 39516535.

53561593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53538489 + 23104 = 7317^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 53561593 - 2¹ = 53561591 is a prime.

Together with 53561591, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (53561591) 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, 26780796 + 26780797.

It is an arithmetic number, because the mean of its divisors is an integer number (26780797).

Almost surely, 2^53561593 is an apocalyptic number.

It is an amenable number.

53561593 is a deficient number, since it is larger than the sum of its proper divisors (1).

53561593 is an equidigital number, since it uses as much as digits as its factorization.

53561593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60750, while the sum is 37.

The square root of 53561593 is about 7318.5786188303. The cubic root of 53561593 is about 376.9506486959.

It can be divided in two parts, 535 and 61593, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 53561593 in words is "fifty-three million, five hundred sixty-one thousand, five hundred ninety-three".