13530971 has 8 divisors (see below), whose sum is σ = 13891584. Its totient is φ = 13173480.

The previous prime is 13530941. The next prime is 13530989. The reversal of 13530971 is 17903531.

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 13530971 - 2²² = 9336667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13530931) 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, 9836 + ... + 11126.

It is an arithmetic number, because the mean of its divisors is an integer number (1736448).

Almost surely, 2^13530971 is an apocalyptic number.

13530971 is a deficient number, since it is larger than the sum of its proper divisors (360613).

13530971 is a wasteful number, since it uses less digits than its factorization.

13530971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 13530971 is about 3678.4468189713. The cubic root of 13530971 is about 238.2921053870.

The spelling of 13530971 in words is "thirteen million, five hundred thirty thousand, nine hundred seventy-one".