53081261 has 2 divisors, whose sum is σ = 53081262. Its totient is φ = 53081260.

The previous prime is 53081227. The next prime is 53081299. The reversal of 53081261 is 16218035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31866025 + 21215236 = 5645^2 + 4606^2 .

It is a cyclic number.

It is not a de Polignac number, because 53081261 - 2¹⁴ = 53064877 is a prime.

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 53081261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53081201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26540630 + 26540631.

It is an arithmetic number, because the mean of its divisors is an integer number (26540631).

Almost surely, 2^53081261 is an apocalyptic number.

It is an amenable number.

53081261 is a deficient number, since it is larger than the sum of its proper divisors (1).

53081261 is an equidigital number, since it uses as much as digits as its factorization.

53081261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 53081261 is about 7285.6887800674. The cubic root of 53081261 is about 375.8204519435.

Adding to 53081261 its reverse (16218035), we get a palindrome (69299296).

The spelling of 53081261 in words is "fifty-three million, eighty-one thousand, two hundred sixty-one".