508778563 has 2 divisors, whose sum is σ = 508778564. Its totient is φ = 508778562.

The previous prime is 508778549. The next prime is 508778587. The reversal of 508778563 is 365877805.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 508778563 - 2¹³ = 508770371 is a prime.

It is not a weakly prime, because it can be changed into another prime (508778593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254389281 + 254389282.

It is an arithmetic number, because the mean of its divisors is an integer number (254389282).

Almost surely, 2^508778563 is an apocalyptic number.

508778563 is a deficient number, since it is larger than the sum of its proper divisors (1).

508778563 is an equidigital number, since it uses as much as digits as its factorization.

508778563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The square root of 508778563 is about 22556.1203002644. The cubic root of 508778563 is about 798.3186369778.

The spelling of 508778563 in words is "five hundred eight million, seven hundred seventy-eight thousand, five hundred sixty-three".