13580249 has 4 divisors (see below), whose sum is σ = 13655460. Its totient is φ = 13505040.

The previous prime is 13580233. The next prime is 13580261. The reversal of 13580249 is 94208531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94208531 = 277 ⋅340103.

It can be written as a sum of positive squares in 2 ways, for example, as 126025 + 13454224 = 355^2 + 3668^2 .

It is a cyclic number.

It is not a de Polignac number, because 13580249 - 2⁴ = 13580233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13580279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37334 + ... + 37695.

It is an arithmetic number, because the mean of its divisors is an integer number (3413865).

Almost surely, 2^13580249 is an apocalyptic number.

It is an amenable number.

13580249 is a deficient number, since it is larger than the sum of its proper divisors (75211).

13580249 is an equidigital number, since it uses as much as digits as its factorization.

13580249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75210.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 13580249 is about 3685.1389390361. The cubic root of 13580249 is about 238.5810309981.

The spelling of 13580249 in words is "thirteen million, five hundred eighty thousand, two hundred forty-nine".