53333081 has 2 divisors, whose sum is σ = 53333082. Its totient is φ = 53333080.

The previous prime is 53333053. The next prime is 53333083. The reversal of 53333081 is 18033335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52693081 + 640000 = 7259^2 + 800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53333081 is a prime.

It is a super-2 number, since 2×53333081² = 5688835057905122, which contains 22 as substring.

Together with 53333083, 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 53333081.

It is not a weakly prime, because it can be changed into another prime (53333083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26666540 + 26666541.

It is an arithmetic number, because the mean of its divisors is an integer number (26666541).

Almost surely, 2^53333081 is an apocalyptic number.

It is an amenable number.

53333081 is a deficient number, since it is larger than the sum of its proper divisors (1).

53333081 is an equidigital number, since it uses as much as digits as its factorization.

53333081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 53333081 is about 7302.9501572994. The cubic root of 53333081 is about 376.4138179146.

The spelling of 53333081 in words is "fifty-three million, three hundred thirty-three thousand, eighty-one".