13520507 has 24 divisors (see below), whose sum is σ = 18270720. Its totient is φ = 9715680.

The previous prime is 13520497. The next prime is 13520509. The reversal of 13520507 is 70502531.

It is not a de Polignac number, because 13520507 - 2¹⁸ = 13258363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13520509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12494 + ... + 13532.

It is an arithmetic number, because the mean of its divisors is an integer number (761280).

Almost surely, 2^13520507 is an apocalyptic number.

13520507 is a deficient number, since it is larger than the sum of its proper divisors (4750213).

13520507 is a wasteful number, since it uses less digits than its factorization.

13520507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 13520507 is about 3677.0242044349. The cubic root of 13520507 is about 238.2306628481.

The spelling of 13520507 in words is "thirteen million, five hundred twenty thousand, five hundred seven".