11332561 has 2 divisors, whose sum is σ = 11332562. Its totient is φ = 11332560.

The previous prime is 11332549. The next prime is 11332567. The reversal of 11332561 is 16523311.

It is a happy number.

11332561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10601536 + 731025 = 3256^2 + 855^2 .

It is a cyclic number.

It is not a de Polignac number, because 11332561 - 2¹⁵ = 11299793 is a prime.

It is equal to p₇₄₇₀₀₄ and since 11332561 and 747004 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11332567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5666280 + 5666281.

It is an arithmetic number, because the mean of its divisors is an integer number (5666281).

Almost surely, 2^11332561 is an apocalyptic number.

It is an amenable number.

11332561 is a deficient number, since it is larger than the sum of its proper divisors (1).

11332561 is an equidigital number, since it uses as much as digits as its factorization.

11332561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 22.

The square root of 11332561 is about 3366.3869355735. The cubic root of 11332561 is about 224.6170341316.

Adding to 11332561 its reverse (16523311), we get a palindrome (27855872).

The spelling of 11332561 in words is "eleven million, three hundred thirty-two thousand, five hundred sixty-one".