53611973 has 2 divisors, whose sum is σ = 53611974. Its totient is φ = 53611972.

The previous prime is 53611967. The next prime is 53612021. The reversal of 53611973 is 37911635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53611684 + 289 = 7322^2 + 17^2 .

It is a cyclic number.

It is not a de Polignac number, because 53611973 - 2¹² = 53607877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53611963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26805986 + 26805987.

It is an arithmetic number, because the mean of its divisors is an integer number (26805987).

Almost surely, 2^53611973 is an apocalyptic number.

It is an amenable number.

53611973 is a deficient number, since it is larger than the sum of its proper divisors (1).

53611973 is an equidigital number, since it uses as much as digits as its factorization.

53611973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 35.

The square root of 53611973 is about 7322.0197350185. The cubic root of 53611973 is about 377.0687981726.

The spelling of 53611973 in words is "fifty-three million, six hundred eleven thousand, nine hundred seventy-three".