13249601 has 8 divisors (see below), whose sum is σ = 13621608. Its totient is φ = 12880000.

The previous prime is 13249583. The next prime is 13249609. The reversal of 13249601 is 10694231.

It is a Cunningham number, because it is equal to 3640²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 640000 + 12609601 = 800^2 + 3551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13249601 - 2²² = 9055297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13249609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18551 + ... + 19251.

It is an arithmetic number, because the mean of its divisors is an integer number (1702701).

Almost surely, 2^13249601 is an apocalyptic number.

It is an amenable number.

13249601 is a deficient number, since it is larger than the sum of its proper divisors (372007).

13249601 is an equidigital number, since it uses as much as digits as its factorization.

13249601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 13249601 is about 3640.0001373626. Note that the first 3 decimals coincide. The cubic root of 13249601 is about 236.6287992931.

The spelling of 13249601 in words is "thirteen million, two hundred forty-nine thousand, six hundred one".