13521465 has 32 divisors (see below), whose sum is σ = 24696960. Its totient is φ = 7013952.

The previous prime is 13521461. The next prime is 13521491. The reversal of 13521465 is 56412531.

13521465 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13521465 - 2² = 13521461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13521461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3642 + ... + 6348.

It is an arithmetic number, because the mean of its divisors is an integer number (771780).

Almost surely, 2^13521465 is an apocalyptic number.

13521465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13521465 is a deficient number, since it is larger than the sum of its proper divisors (11175495).

13521465 is a wasteful number, since it uses less digits than its factorization.

13521465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758 (or 2752 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 13521465 is about 3677.1544705111. The cubic root of 13521465 is about 238.2362893527.

Adding to 13521465 its reverse (56412531), we get a palindrome (69933996).

The spelling of 13521465 in words is "thirteen million, five hundred twenty-one thousand, four hundred sixty-five".