13533497 has 4 divisors (see below), whose sum is σ = 13788900. Its totient is φ = 13278096.

The previous prime is 13533493. The next prime is 13533503. The reversal of 13533497 is 79433531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12243001 + 1290496 = 3499^2 + 1136^2 .

It is a cyclic number.

It is not a de Polignac number, because 13533497 - 2² = 13533493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13533493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127622 + ... + 127727.

It is an arithmetic number, because the mean of its divisors is an integer number (3447225).

Almost surely, 2^13533497 is an apocalyptic number.

It is an amenable number.

13533497 is a deficient number, since it is larger than the sum of its proper divisors (255403).

13533497 is an equidigital number, since it uses as much as digits as its factorization.

13533497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255402.

The product of its digits is 34020, while the sum is 35.

The square root of 13533497 is about 3678.7901543850. The cubic root of 13533497 is about 238.3069328128.

The spelling of 13533497 in words is "thirteen million, five hundred thirty-three thousand, four hundred ninety-seven".