13487547 has 4 divisors (see below), whose sum is σ = 17983400. Its totient is φ = 8991696.

The previous prime is 13487531. The next prime is 13487557. The reversal of 13487547 is 74578431.

13487547 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13487547 - 2⁴ = 13487531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13487557) 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, 2247922 + ... + 2247927.

It is an arithmetic number, because the mean of its divisors is an integer number (4495850).

Almost surely, 2^13487547 is an apocalyptic number.

13487547 is a deficient number, since it is larger than the sum of its proper divisors (4495853).

13487547 is an equidigital number, since it uses as much as digits as its factorization.

13487547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495852.

The product of its digits is 94080, while the sum is 39.

The square root of 13487547 is about 3672.5395845382. The cubic root of 13487547 is about 238.0369208075.

The spelling of 13487547 in words is "thirteen million, four hundred eighty-seven thousand, five hundred forty-seven".