10208561 has 4 divisors (see below), whose sum is σ = 11136624. Its totient is φ = 9280500.

The previous prime is 10208537. The next prime is 10208563. The reversal of 10208561 is 16580201.

10208561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16580201 = 11 ⋅1507291.

It is a cyclic number.

It is not a de Polignac number, because 10208561 - 2¹⁰ = 10207537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10208563) 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, 464015 + ... + 464036.

It is an arithmetic number, because the mean of its divisors is an integer number (2784156).

Almost surely, 2^10208561 is an apocalyptic number.

10208561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10208561 is a deficient number, since it is larger than the sum of its proper divisors (928063).

10208561 is an equidigital number, since it uses as much as digits as its factorization.

10208561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928062.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 10208561 is about 3195.0838799631. The cubic root of 10208561 is about 216.9309456280.

Adding to 10208561 its reverse (16580201), we get a palindrome (26788762).

The spelling of 10208561 in words is "ten million, two hundred eight thousand, five hundred sixty-one".