13563043 has 4 divisors (see below), whose sum is σ = 14606368. Its totient is φ = 12519720.

The previous prime is 13563041. The next prime is 13563049. The reversal of 13563043 is 34036531.

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 13563043 - 2¹ = 13563041 is a prime.

It is a super-2 number, since 2×13563043² = 367912270839698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13562999 and 13563017.

It is not an unprimeable number, because it can be changed into a prime (13563041) 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, 521643 + ... + 521668.

It is an arithmetic number, because the mean of its divisors is an integer number (3651592).

Almost surely, 2^13563043 is an apocalyptic number.

13563043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13563043 is a deficient number, since it is larger than the sum of its proper divisors (1043325).

13563043 is a wasteful number, since it uses less digits than its factorization.

13563043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043324.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 13563043 is about 3682.8036874099. The cubic root of 13563043 is about 238.4802287200.

Adding to 13563043 its reverse (34036531), we get a palindrome (47599574).

The spelling of 13563043 in words is "thirteen million, five hundred sixty-three thousand, forty-three".