53405081 has 2 divisors, whose sum is σ = 53405082. Its totient is φ = 53405080.

The previous prime is 53405071. The next prime is 53405101. The reversal of 53405081 is 18050435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50183056 + 3222025 = 7084^2 + 1795^2 .

It is a cyclic number.

It is not a de Polignac number, because 53405081 - 2¹⁸ = 53142937 is a prime.

It is a super-2 number, since 2×53405081² = 5704205353233122, which contains 22 as substring.

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 53405081.

It is not a weakly prime, because it can be changed into another prime (53405071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26702540 + 26702541.

It is an arithmetic number, because the mean of its divisors is an integer number (26702541).

Almost surely, 2^53405081 is an apocalyptic number.

It is an amenable number.

53405081 is a deficient number, since it is larger than the sum of its proper divisors (1).

53405081 is an equidigital number, since it uses as much as digits as its factorization.

53405081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 53405081 is about 7307.8780093814. The cubic root of 53405081 is about 376.5831287667.

The spelling of 53405081 in words is "fifty-three million, four hundred five thousand, eighty-one".