11281577 has 2 divisors, whose sum is σ = 11281578. Its totient is φ = 11281576.

The previous prime is 11281561. The next prime is 11281579. The reversal of 11281577 is 77518211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9461776 + 1819801 = 3076^2 + 1349^2 .

It is a cyclic number.

It is not a de Polignac number, because 11281577 - 2⁴ = 11281561 is a prime.

Together with 11281579, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (11281579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5640788 + 5640789.

It is an arithmetic number, because the mean of its divisors is an integer number (5640789).

Almost surely, 2^11281577 is an apocalyptic number.

It is an amenable number.

11281577 is a deficient number, since it is larger than the sum of its proper divisors (1).

11281577 is an equidigital number, since it uses as much as digits as its factorization.

11281577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3920, while the sum is 32.

The square root of 11281577 is about 3358.8058890028. The cubic root of 11281577 is about 224.2796849212.

Adding to 11281577 its reverse (77518211), we get a palindrome (88799788).

The spelling of 11281577 in words is "eleven million, two hundred eighty-one thousand, five hundred seventy-seven".