53111355551 has 2 divisors, whose sum is σ = 53111355552. Its totient is φ = 53111355550.

The previous prime is 53111355509. The next prime is 53111355581. The reversal of 53111355551 is 15555311135.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53111355551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53111355581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26555677775 + 26555677776.

It is an arithmetic number, because the mean of its divisors is an integer number (26555677776).

Almost surely, 2^53111355551 is an apocalyptic number.

53111355551 is a deficient number, since it is larger than the sum of its proper divisors (1).

53111355551 is an equidigital number, since it uses as much as digits as its factorization.

53111355551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28125, while the sum is 35.

Adding to 53111355551 its reverse (15555311135), we get a palindrome (68666666686).

The spelling of 53111355551 in words is "fifty-three billion, one hundred eleven million, three hundred fifty-five thousand, five hundred fifty-one".