53211611 has 2 divisors, whose sum is σ = 53211612. Its totient is φ = 53211610.

The previous prime is 53211583. The next prime is 53211617. The reversal of 53211611 is 11611235.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53211611 is a prime.

It is not a weakly prime, because it can be changed into another prime (53211617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26605805 + 26605806.

It is an arithmetic number, because the mean of its divisors is an integer number (26605806).

Almost surely, 2^53211611 is an apocalyptic number.

53211611 is a deficient number, since it is larger than the sum of its proper divisors (1).

53211611 is an equidigital number, since it uses as much as digits as its factorization.

53211611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 20.

The square root of 53211611 is about 7294.6289144822. The cubic root of 53211611 is about 376.1278306682.

Adding to 53211611 its reverse (11611235), we get a palindrome (64822846).

The spelling of 53211611 in words is "fifty-three million, two hundred eleven thousand, six hundred eleven".