53135281 has 2 divisors, whose sum is σ = 53135282. Its totient is φ = 53135280.

The previous prime is 53135273. The next prime is 53135297. The reversal of 53135281 is 18253135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37015056 + 16120225 = 6084^2 + 4015^2 .

It is a cyclic number.

It is not a de Polignac number, because 53135281 - 2³ = 53135273 is a prime.

It is a super-2 number, since 2×53135281² = 5646716173897922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53135261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26567640 + 26567641.

It is an arithmetic number, because the mean of its divisors is an integer number (26567641).

Almost surely, 2^53135281 is an apocalyptic number.

It is an amenable number.

53135281 is a deficient number, since it is larger than the sum of its proper divisors (1).

53135281 is an equidigital number, since it uses as much as digits as its factorization.

53135281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The square root of 53135281 is about 7289.3951052196. The cubic root of 53135281 is about 375.9478976583.

The spelling of 53135281 in words is "fifty-three million, one hundred thirty-five thousand, two hundred eighty-one".