53235148181 has 2 divisors, whose sum is σ = 53235148182. Its totient is φ = 53235148180.

The previous prime is 53235148139. The next prime is 53235148199. The reversal of 53235148181 is 18184153235.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51456839281 + 1778308900 = 226841^2 + 42170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53235148181 is a prime.

It is a super-2 number, since 2×53235148181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53235144181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26617574090 + 26617574091.

It is an arithmetic number, because the mean of its divisors is an integer number (26617574091).

Almost surely, 2^53235148181 is an apocalyptic number.

It is an amenable number.

53235148181 is a deficient number, since it is larger than the sum of its proper divisors (1).

53235148181 is an equidigital number, since it uses as much as digits as its factorization.

53235148181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 41.

The spelling of 53235148181 in words is "fifty-three billion, two hundred thirty-five million, one hundred forty-eight thousand, one hundred eighty-one".