13530071 has 4 divisors (see below), whose sum is σ = 14242200. Its totient is φ = 12817944.

The previous prime is 13530067. The next prime is 13530089. The reversal of 13530071 is 17003531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17003531 = 31 ⋅548501.

It is a cyclic number.

It is not a de Polignac number, because 13530071 - 2² = 13530067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530091) 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, 356036 + ... + 356073.

It is an arithmetic number, because the mean of its divisors is an integer number (3560550).

Almost surely, 2^13530071 is an apocalyptic number.

13530071 is a deficient number, since it is larger than the sum of its proper divisors (712129).

13530071 is an equidigital number, since it uses as much as digits as its factorization.

13530071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712128.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 13530071 is about 3678.3244826959. The cubic root of 13530071 is about 238.2868220103.

The spelling of 13530071 in words is "thirteen million, five hundred thirty thousand, seventy-one".