53020081 has 2 divisors, whose sum is σ = 53020082. Its totient is φ = 53020080.

The previous prime is 53020073. The next prime is 53020109. The reversal of 53020081 is 18002035.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52707600 + 312481 = 7260^2 + 559^2 .

It is a cyclic number.

It is not a de Polignac number, because 53020081 - 2³ = 53020073 is a prime.

It is a super-2 number, since 2×53020081² = 5622257978493122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53020481) 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, 26510040 + 26510041.

It is an arithmetic number, because the mean of its divisors is an integer number (26510041).

Almost surely, 2^53020081 is an apocalyptic number.

It is an amenable number.

53020081 is a deficient number, since it is larger than the sum of its proper divisors (1).

53020081 is an equidigital number, since it uses as much as digits as its factorization.

53020081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 53020081 is about 7281.4889274104. The cubic root of 53020081 is about 375.6760096672.

The spelling of 53020081 in words is "fifty-three million, twenty thousand, eighty-one".