13561245 has 12 divisors (see below), whose sum is σ = 23506236. Its totient is φ = 7232640.

The previous prime is 13561199. The next prime is 13561259. The reversal of 13561245 is 54216531.

13561245 is a `hidden beast` number, since 1 + 3 + 5 + 612 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2452356 + 11108889 = 1566^2 + 3333^2 .

It is not a de Polignac number, because 13561245 - 2¹⁰ = 13560221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150636 + ... + 150725.

It is an arithmetic number, because the mean of its divisors is an integer number (1958853).

Almost surely, 2^13561245 is an apocalyptic number.

13561245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13561245 is a deficient number, since it is larger than the sum of its proper divisors (9944991).

13561245 is a wasteful number, since it uses less digits than its factorization.

13561245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301372 (or 301369 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 13561245 is about 3682.5595718196. The cubic root of 13561245 is about 238.4696901213.

Adding to 13561245 its reverse (54216531), we get a palindrome (67777776).

It can be divided in two parts, 1356 and 1245, that added together give a square (2601 = 51²).

The spelling of 13561245 in words is "thirteen million, five hundred sixty-one thousand, two hundred forty-five".