13661453 has 12 divisors (see below), whose sum is σ = 14899860. Its totient is φ = 12519936.

The previous prime is 13661449. The next prime is 13661467. The reversal of 13661453 is 35416631.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 426409 + 13235044 = 653^2 + 3638^2 .

It is not a de Polignac number, because 13661453 - 2² = 13661449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13661953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38525 + ... + 38877.

It is an arithmetic number, because the mean of its divisors is an integer number (1241655).

Almost surely, 2^13661453 is an apocalyptic number.

13661453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13661453 is a deficient number, since it is larger than the sum of its proper divisors (1238407).

13661453 is a wasteful number, since it uses less digits than its factorization.

13661453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 595 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 13661453 is about 3696.1402841342. The cubic root of 13661453 is about 239.0556233345.

The spelling of 13661453 in words is "thirteen million, six hundred sixty-one thousand, four hundred fifty-three".