2564163503 has 4 divisors (see below), whose sum is σ = 2797269288. Its totient is φ = 2331057720.

The previous prime is 2564163467. The next prime is 2564163521. The reversal of 2564163503 is 3053614652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2564163503 - 2⁶ = 2564163439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564163583) 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 in 3 ways as a sum of consecutive naturals, for example, 116552876 + ... + 116552897.

It is an arithmetic number, because the mean of its divisors is an integer number (699317322).

Almost surely, 2^2564163503 is an apocalyptic number.

2564163503 is a deficient number, since it is larger than the sum of its proper divisors (233105785).

2564163503 is a wasteful number, since it uses less digits than its factorization.

2564163503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233105784.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 2564163503 is about 50637.5700740073. The cubic root of 2564163503 is about 1368.7219691986.

The spelling of 2564163503 in words is "two billion, five hundred sixty-four million, one hundred sixty-three thousand, five hundred three".