133513503 has 8 divisors (see below), whose sum is σ = 178071600. Its totient is φ = 88982208.

The previous prime is 133513493. The next prime is 133513517. The reversal of 133513503 is 305315331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133513503 - 2¹⁰ = 133512479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133513553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14613 + ... + 21921.

It is an arithmetic number, because the mean of its divisors is an integer number (22258950).

Almost surely, 2^133513503 is an apocalyptic number.

133513503 is a deficient number, since it is larger than the sum of its proper divisors (44558097).

133513503 is an equidigital number, since it uses as much as digits as its factorization.

133513503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13401.

The product of its (nonzero) digits is 2025, while the sum is 24.

The square root of 133513503 is about 11554.8043254743. The cubic root of 133513503 is about 511.1029608849.

Adding to 133513503 its reverse (305315331), we get a palindrome (438828834).

The spelling of 133513503 in words is "one hundred thirty-three million, five hundred thirteen thousand, five hundred three".