13530811 has 12 divisors (see below), whose sum is σ = 15800400. Its totient is φ = 11553360.

The previous prime is 13530809. The next prime is 13530823. The reversal of 13530811 is 11803531.

It is not a de Polignac number, because 13530811 - 2¹ = 13530809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13530871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22290 + ... + 22888.

It is an arithmetic number, because the mean of its divisors is an integer number (1316700).

Almost surely, 2^13530811 is an apocalyptic number.

13530811 is a deficient number, since it is larger than the sum of its proper divisors (2269589).

13530811 is an equidigital number, since it uses as much as digits as its factorization.

13530811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 13530811 is about 3678.4250705975. The cubic root of 13530811 is about 238.2911661372.

It can be divided in two parts, 13530 and 811, that added together give a palindrome (14341).

The spelling of 13530811 in words is "thirteen million, five hundred thirty thousand, eight hundred eleven".