13520001 has 16 divisors (see below), whose sum is σ = 20701440. Its totient is φ = 7762320.

The previous prime is 13519993. The next prime is 13520011. The reversal of 13520001 is 10002531.

It is not a de Polignac number, because 13520001 - 2³ = 13519993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13520011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10155 + ... + 11408.

It is an arithmetic number, because the mean of its divisors is an integer number (1293840).

Almost surely, 2^13520001 is an apocalyptic number.

13520001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13520001 is a deficient number, since it is larger than the sum of its proper divisors (7181439).

13520001 is a wasteful number, since it uses less digits than its factorization.

13520001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21596.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 13520001 is about 3676.9553981521. The cubic root of 13520001 is about 238.2276909128.

Adding to 13520001 its reverse (10002531), we get a palindrome (23522532).

The spelling of 13520001 in words is "thirteen million, five hundred twenty thousand, one".