13987545 has 32 divisors (see below), whose sum is σ = 26296704. Its totient is φ = 6259200.

The previous prime is 13987537. The next prime is 13987559. The reversal of 13987545 is 54578931.

It is not a de Polignac number, because 13987545 - 2³ = 13987537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13987497 and 13987506.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1116 + ... + 5405.

It is an arithmetic number, because the mean of its divisors is an integer number (821772).

Almost surely, 2^13987545 is an apocalyptic number.

13987545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13987545 is a deficient number, since it is larger than the sum of its proper divisors (12309159).

13987545 is a wasteful number, since it uses less digits than its factorization.

13987545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6553.

The product of its digits is 151200, while the sum is 42.

The square root of 13987545 is about 3739.9926470516. The cubic root of 13987545 is about 240.9427330171.

The spelling of 13987545 in words is "thirteen million, nine hundred eighty-seven thousand, five hundred forty-five".