11542563 has 6 divisors (see below), whose sum is σ = 16672604. Its totient is φ = 7695036.

The previous prime is 11542549. The next prime is 11542567. The reversal of 11542563 is 36524511.

It is not a de Polignac number, because 11542563 - 2⁹ = 11542051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11542567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 641245 + ... + 641262.

Almost surely, 2^11542563 is an apocalyptic number.

11542563 is a deficient number, since it is larger than the sum of its proper divisors (5130041).

11542563 is a wasteful number, since it uses less digits than its factorization.

11542563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282513 (or 1282510 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 11542563 is about 3397.4347675857. The cubic root of 11542563 is about 225.9959993549.

It can be divided in two parts, 1 and 1542563, that added together give a square (1542564 = 1242²).

The spelling of 11542563 in words is "eleven million, five hundred forty-two thousand, five hundred sixty-three".