1011254563 has 12 divisors (see below), whose sum is σ = 1142549928. Its totient is φ = 887613440.

The previous prime is 1011254483. The next prime is 1011254591. The reversal of 1011254563 is 3654521101.

It is a de Polignac number, because none of the positive numbers 2^k-1011254563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011254663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45406 + ... + 63907.

It is an arithmetic number, because the mean of its divisors is an integer number (95212494).

Almost surely, 2^1011254563 is an apocalyptic number.

1011254563 is a deficient number, since it is larger than the sum of its proper divisors (131295365).

1011254563 is a wasteful number, since it uses less digits than its factorization.

1011254563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109382 (or 109353 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1011254563 is about 31800.2289771630. The cubic root of 1011254563 is about 1003.7375344330.

Adding to 1011254563 its reverse (3654521101), we get a palindrome (4665775664).

The spelling of 1011254563 in words is "one billion, eleven million, two hundred fifty-four thousand, five hundred sixty-three".