13561424 has 10 divisors (see below), whose sum is σ = 26275290. Its totient is φ = 6780704.

The previous prime is 13561417. The next prime is 13561433. The reversal of 13561424 is 42416531.

It can be written as a sum of positive squares in only one way, i.e., 8809024 + 4752400 = 2968^2 + 2180^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13561393 and 13561402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423779 + ... + 423810.

It is an arithmetic number, because the mean of its divisors is an integer number (2627529).

Almost surely, 2^13561424 is an apocalyptic number.

It is an amenable number.

13561424 is a deficient number, since it is larger than the sum of its proper divisors (12713866).

13561424 is an equidigital number, since it uses as much as digits as its factorization.

13561424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847597 (or 847591 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 13561424 is about 3682.5838754874. The cubic root of 13561424 is about 238.4707393339.

Adding to 13561424 its reverse (42416531), we get a palindrome (55977955).

The spelling of 13561424 in words is "thirteen million, five hundred sixty-one thousand, four hundred twenty-four".