13520275 has 12 divisors (see below), whose sum is σ = 17156392. Its totient is φ = 10563840.

The previous prime is 13520249. The next prime is 13520279. The reversal of 13520275 is 57202531.

It is not a de Polignac number, because 13520275 - 2⁷ = 13520147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13520279) 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 11 ways as a sum of consecutive naturals, for example, 5214 + ... + 7363.

Almost surely, 2^13520275 is an apocalyptic number.

13520275 is a deficient number, since it is larger than the sum of its proper divisors (3636117).

13520275 is a wasteful number, since it uses less digits than its factorization.

13520275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12630 (or 12625 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 13520275 is about 3676.9926570501. The cubic root of 13520275 is about 238.2293002308.

The spelling of 13520275 in words is "thirteen million, five hundred twenty thousand, two hundred seventy-five".