53661593 has 2 divisors, whose sum is σ = 53661594. Its totient is φ = 53661592.

The previous prime is 53661583. The next prime is 53661607. The reversal of 53661593 is 39516635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53465344 + 196249 = 7312^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 53661593 - 2¹⁰ = 53660569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53661583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26830796 + 26830797.

It is an arithmetic number, because the mean of its divisors is an integer number (26830797).

Almost surely, 2^53661593 is an apocalyptic number.

It is an amenable number.

53661593 is a deficient number, since it is larger than the sum of its proper divisors (1).

53661593 is an equidigital number, since it uses as much as digits as its factorization.

53661593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 38.

The square root of 53661593 is about 7325.4073606865. The cubic root of 53661593 is about 377.1850929936.

The spelling of 53661593 in words is "fifty-three million, six hundred sixty-one thousand, five hundred ninety-three".