13520475 has 18 divisors (see below), whose sum is σ = 24217076. Its totient is φ = 7210800.

The previous prime is 13520453. The next prime is 13520477. The reversal of 13520475 is 57402531.

It is a happy number.

It is not a de Polignac number, because 13520475 - 2⁶ = 13520411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13520477) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 29821 + ... + 30270.

Almost surely, 2^13520475 is an apocalyptic number.

13520475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13520475 is a deficient number, since it is larger than the sum of its proper divisors (10696601).

13520475 is a wasteful number, since it uses less digits than its factorization.

13520475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60107 (or 60099 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 13520475 is about 3677.0198530876. The cubic root of 13520475 is about 238.2304749018.

The spelling of 13520475 in words is "thirteen million, five hundred twenty thousand, four hundred seventy-five".