11298561 has 8 divisors (see below), whose sum is σ = 15090624. Its totient is φ = 7519440.

The previous prime is 11298517. The next prime is 11298569. The reversal of 11298561 is 16589211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11298561 - 2⁷ = 11298433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11298569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970 + ... + 4851.

It is an arithmetic number, because the mean of its divisors is an integer number (1886328).

Almost surely, 2^11298561 is an apocalyptic number.

11298561 is the 1941-st octagonal number.

It is an amenable number.

11298561 is a deficient number, since it is larger than the sum of its proper divisors (3792063).

11298561 is an equidigital number, since it uses as much as digits as its factorization.

11298561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6471.

The product of its digits is 4320, while the sum is 33.

The square root of 11298561 is about 3361.3332176385. Note that the first 3 decimals coincide. The cubic root of 11298561 is about 224.3921767666.

The spelling of 11298561 in words is "eleven million, two hundred ninety-eight thousand, five hundred sixty-one".