13987541 has 8 divisors (see below), whose sum is σ = 14937600. Its totient is φ = 13068720.

The previous prime is 13987537. The next prime is 13987559. The reversal of 13987541 is 14578931.

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

It is a cyclic number.

It is not a de Polignac number, because 13987541 - 2² = 13987537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13987495 and 13987504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13987531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6881 + ... + 8678.

It is an arithmetic number, because the mean of its divisors is an integer number (1867200).

Almost surely, 2^13987541 is an apocalyptic number.

It is an amenable number.

13987541 is a deficient number, since it is larger than the sum of its proper divisors (950059).

13987541 is a wasteful number, since it uses less digits than its factorization.

13987541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15619.

The product of its digits is 30240, while the sum is 38.

The square root of 13987541 is about 3739.9921122911. The cubic root of 13987541 is about 240.9427100498.

The spelling of 13987541 in words is "thirteen million, nine hundred eighty-seven thousand, five hundred forty-one".