13149601 has 2 divisors, whose sum is σ = 13149602. Its totient is φ = 13149600.

The previous prime is 13149599. The next prime is 13149623. The reversal of 13149601 is 10694131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12418576 + 731025 = 3524^2 + 855^2 .

It is a cyclic number.

It is not a de Polignac number, because 13149601 - 2¹ = 13149599 is a prime.

Together with 13149599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13149001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6574800 + 6574801.

It is an arithmetic number, because the mean of its divisors is an integer number (6574801).

Almost surely, 2^13149601 is an apocalyptic number.

It is an amenable number.

13149601 is a deficient number, since it is larger than the sum of its proper divisors (1).

13149601 is an equidigital number, since it uses as much as digits as its factorization.

13149601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 13149601 is about 3626.2378576150. The cubic root of 13149601 is about 236.0319847964.

The spelling of 13149601 in words is "thirteen million, one hundred forty-nine thousand, six hundred one".