53564281 has 2 divisors, whose sum is σ = 53564282. Its totient is φ = 53564280.

The previous prime is 53564243. The next prime is 53564293. The reversal of 53564281 is 18246535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39576681 + 13987600 = 6291^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 53564281 - 2¹¹ = 53562233 is a prime.

It is a super-2 number, since 2×53564281² = 5738264398093922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53564201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26782140 + 26782141.

It is an arithmetic number, because the mean of its divisors is an integer number (26782141).

Almost surely, 2^53564281 is an apocalyptic number.

It is an amenable number.

53564281 is a deficient number, since it is larger than the sum of its proper divisors (1).

53564281 is an equidigital number, since it uses as much as digits as its factorization.

53564281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 34.

The square root of 53564281 is about 7318.7622587429. The cubic root of 53564281 is about 376.9569543734.

The spelling of 53564281 in words is "fifty-three million, five hundred sixty-four thousand, two hundred eighty-one".