13533147 has 6 divisors (see below), whose sum is σ = 19547892. Its totient is φ = 9022092.

The previous prime is 13533137. The next prime is 13533151. The reversal of 13533147 is 74133531.

It is not a de Polignac number, because 13533147 - 2⁸ = 13532891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13533147.

It is not an unprimeable number, because it can be changed into a prime (13533137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 751833 + ... + 751850.

It is an arithmetic number, because the mean of its divisors is an integer number (3257982).

Almost surely, 2^13533147 is an apocalyptic number.

13533147 is a deficient number, since it is larger than the sum of its proper divisors (6014745).

13533147 is a wasteful number, since it uses less digits than its factorization.

13533147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503689 (or 1503686 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 13533147 is about 3678.7425840904. The cubic root of 13533147 is about 238.3048784499.

Adding to 13533147 its reverse (74133531), we get a palindrome (87666678).

The spelling of 13533147 in words is "thirteen million, five hundred thirty-three thousand, one hundred forty-seven".