11355861 has 8 divisors (see below), whose sum is σ = 16517664. Its totient is φ = 6882320.

The previous prime is 11355857. The next prime is 11355917. The reversal of 11355861 is 16855311.

11355861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11355861 - 2² = 11355857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11355761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172026 + ... + 172091.

It is an arithmetic number, because the mean of its divisors is an integer number (2064708).

Almost surely, 2^11355861 is an apocalyptic number.

11355861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11355861 is a deficient number, since it is larger than the sum of its proper divisors (5161803).

11355861 is a wasteful number, since it uses less digits than its factorization.

11355861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344131.

The product of its digits is 3600, while the sum is 30.

The square root of 11355861 is about 3369.8458421714. The cubic root of 11355861 is about 224.7708679738.

It can be divided in two parts, 1135 and 5861, that added together give a palindrome (6996).

The spelling of 11355861 in words is "eleven million, three hundred fifty-five thousand, eight hundred sixty-one".