11245561 has 2 divisors, whose sum is σ = 11245562. Its totient is φ = 11245560.

The previous prime is 11245547. The next prime is 11245573. The reversal of 11245561 is 16554211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10361961 + 883600 = 3219^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 11245561 - 2⁹ = 11245049 is a prime.

It is not a weakly prime, because it can be changed into another prime (11245261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5622780 + 5622781.

It is an arithmetic number, because the mean of its divisors is an integer number (5622781).

Almost surely, 2^11245561 is an apocalyptic number.

It is an amenable number.

11245561 is a deficient number, since it is larger than the sum of its proper divisors (1).

11245561 is an equidigital number, since it uses as much as digits as its factorization.

11245561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 11245561 is about 3353.4401739110. The cubic root of 11245561 is about 224.0407624054.

Adding to 11245561 its reverse (16554211), we get a palindrome (27799772).

The spelling of 11245561 in words is "eleven million, two hundred forty-five thousand, five hundred sixty-one".