13561071 has 8 divisors (see below), whose sum is σ = 18336384. Its totient is φ = 8913240.

The previous prime is 13561049. The next prime is 13561081. The reversal of 13561071 is 17016531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13561071 - 2¹⁰ = 13560047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13561021) 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 7 ways as a sum of consecutive naturals, for example, 31621 + ... + 32046.

It is an arithmetic number, because the mean of its divisors is an integer number (2292048).

Almost surely, 2^13561071 is an apocalyptic number.

13561071 is a deficient number, since it is larger than the sum of its proper divisors (4775313).

13561071 is an equidigital number, since it uses as much as digits as its factorization.

13561071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63741.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 13561071 is about 3682.5359468714. The cubic root of 13561071 is about 238.4686702075.

The spelling of 13561071 in words is "thirteen million, five hundred sixty-one thousand, seventy-one".