53611697 has 2 divisors, whose sum is σ = 53611698. Its totient is φ = 53611696.

The previous prime is 53611651. The next prime is 53611699. The reversal of 53611697 is 79611635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38056561 + 15555136 = 6169^2 + 3944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53611697 is a prime.

Together with 53611699, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53611697.

It is not a weakly prime, because it can be changed into another prime (53611699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26805848 + 26805849.

It is an arithmetic number, because the mean of its divisors is an integer number (26805849).

Almost surely, 2^53611697 is an apocalyptic number.

It is an amenable number.

53611697 is a deficient number, since it is larger than the sum of its proper divisors (1).

53611697 is an equidigital number, since it uses as much as digits as its factorization.

53611697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 38.

The square root of 53611697 is about 7322.0008877355. Note that the first 3 decimals coincide. The cubic root of 53611697 is about 377.0681511084.

The spelling of 53611697 in words is "fifty-three million, six hundred eleven thousand, six hundred ninety-seven".