254766563 has 2 divisors, whose sum is σ = 254766564. Its totient is φ = 254766562.

The previous prime is 254766559. The next prime is 254766581. The reversal of 254766563 is 365667452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 254766563 - 2² = 254766559 is a prime.

It is not a weakly prime, because it can be changed into another prime (254766503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127383281 + 127383282.

It is an arithmetic number, because the mean of its divisors is an integer number (127383282).

Almost surely, 2^254766563 is an apocalyptic number.

254766563 is a deficient number, since it is larger than the sum of its proper divisors (1).

254766563 is an equidigital number, since it uses as much as digits as its factorization.

254766563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 44.

The square root of 254766563 is about 15961.4085531321. The cubic root of 254766563 is about 633.9390081873.

It can be divided in two parts, 2547 and 66563, that multiplied together give a palindrome (169535961).

The spelling of 254766563 in words is "two hundred fifty-four million, seven hundred sixty-six thousand, five hundred sixty-three".