13506501 has 4 divisors (see below), whose sum is σ = 18008672. Its totient is φ = 9004332.

The previous prime is 13506481. The next prime is 13506509. The reversal of 13506501 is 10560531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13506501 - 2¹⁴ = 13490117 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 (13506509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2251081 + ... + 2251086.

It is an arithmetic number, because the mean of its divisors is an integer number (4502168).

Almost surely, 2^13506501 is an apocalyptic number.

It is an amenable number.

13506501 is a deficient number, since it is larger than the sum of its proper divisors (4502171).

13506501 is an equidigital number, since it uses as much as digits as its factorization.

13506501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4502170.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 13506501 is about 3675.1191817409. The cubic root of 13506501 is about 238.1483727515.

The spelling of 13506501 in words is "thirteen million, five hundred six thousand, five hundred one".