1135254563 has 4 divisors (see below), whose sum is σ = 1137293280. Its totient is φ = 1133215848.

The previous prime is 1135254553. The next prime is 1135254587. The reversal of 1135254563 is 3654525311.

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 1135254563 - 2²⁰ = 1134205987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1135254553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018523 + ... + 1019636.

It is an arithmetic number, because the mean of its divisors is an integer number (284323320).

Almost surely, 2^1135254563 is an apocalyptic number.

1135254563 is a deficient number, since it is larger than the sum of its proper divisors (2038717).

1135254563 is an equidigital number, since it uses as much as digits as its factorization.

1135254563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038716.

The product of its digits is 54000, while the sum is 35.

The square root of 1135254563 is about 33693.5388910099. The cubic root of 1135254563 is about 1043.1924103290.

Adding to 1135254563 its reverse (3654525311), we get a palindrome (4789779874).

The spelling of 1135254563 in words is "one billion, one hundred thirty-five million, two hundred fifty-four thousand, five hundred sixty-three".