13003505 has 8 divisors (see below), whose sum is σ = 16425600. Its totient is φ = 9855216.

The previous prime is 13003499. The next prime is 13003511. The reversal of 13003505 is 50530031.

13003505 = T₄₇₅ + T₄₇₆ + ... + T₅₆₉.

It is an interprime number because it is at equal distance from previous prime (13003499) and next prime (13003511).

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

It is a cyclic number.

It is not a de Polignac number, because 13003505 - 2¹⁰ = 13002481 is a prime.

It is a super-2 number, since 2×13003505² = 338182284570050, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 68345 + ... + 68534.

It is an arithmetic number, because the mean of its divisors is an integer number (2053200).

Almost surely, 2^13003505 is an apocalyptic number.

It is an amenable number.

13003505 is a deficient number, since it is larger than the sum of its proper divisors (3422095).

13003505 is a wasteful number, since it uses less digits than its factorization.

13003505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136903.

The product of its (nonzero) digits is 225, while the sum is 17.

The square root of 13003505 is about 3606.0372987533. The cubic root of 13003505 is about 235.1545987401.

Adding to 13003505 its reverse (50530031), we get a palindrome (63533536).

The spelling of 13003505 in words is "thirteen million, three thousand, five hundred five".