13561371 has 16 divisors (see below), whose sum is σ = 20293920. Its totient is φ = 8949600.

The previous prime is 13561369. The next prime is 13561381. The reversal of 13561371 is 17316531.

It is not a de Polignac number, because 13561371 - 2¹ = 13561369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13561321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241 + ... + 5213.

It is an arithmetic number, because the mean of its divisors is an integer number (1268370).

Almost surely, 2^13561371 is an apocalyptic number.

13561371 is a deficient number, since it is larger than the sum of its proper divisors (6732549).

13561371 is a wasteful number, since it uses less digits than its factorization.

13561371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5083 (or 5077 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 13561371 is about 3682.5766794461. The cubic root of 13561371 is about 238.4704286741.

The spelling of 13561371 in words is "thirteen million, five hundred sixty-one thousand, three hundred seventy-one".