13135501 has 4 divisors (see below), whose sum is σ = 13235904. Its totient is φ = 13035100.

The previous prime is 13135477. The next prime is 13135519. The reversal of 13135501 is 10553131.

13135501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10553131 = 1009 ⋅10459.

It is a cyclic number.

It is not a de Polignac number, because 13135501 - 2⁵ = 13135469 is a prime.

It is a Duffinian number.

13135501 is a modest number, since divided by 35501 gives 131 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13135541) 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, 50005 + ... + 50266.

It is an arithmetic number, because the mean of its divisors is an integer number (3308976).

Almost surely, 2^13135501 is an apocalyptic number.

It is an amenable number.

13135501 is a deficient number, since it is larger than the sum of its proper divisors (100403).

13135501 is a wasteful number, since it uses less digits than its factorization.

13135501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100402.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 13135501 is about 3624.2931724683. The cubic root of 13135501 is about 235.9475908232.

Adding to 13135501 its reverse (10553131), we get a palindrome (23688632).

The spelling of 13135501 in words is "thirteen million, one hundred thirty-five thousand, five hundred one".