53456563 has 2 divisors, whose sum is σ = 53456564. Its totient is φ = 53456562.

The previous prime is 53456509. The next prime is 53456587. The reversal of 53456563 is 36565435.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53456563 - 2²¹ = 51359411 is a prime.

It is not a weakly prime, because it can be changed into another prime (53456503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26728281 + 26728282.

It is an arithmetic number, because the mean of its divisors is an integer number (26728282).

Almost surely, 2^53456563 is an apocalyptic number.

53456563 is a deficient number, since it is larger than the sum of its proper divisors (1).

53456563 is an equidigital number, since it uses as much as digits as its factorization.

53456563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 37.

The square root of 53456563 is about 7311.3995240309. The cubic root of 53456563 is about 376.7040974454.

The spelling of 53456563 in words is "fifty-three million, four hundred fifty-six thousand, five hundred sixty-three".