11881061 has 4 divisors (see below), whose sum is σ = 12506400. Its totient is φ = 11255724.

The previous prime is 11881057. The next prime is 11881117. The reversal of 11881061 is 16018811.

11881061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11881061 - 2² = 11881057 is a prime.

It is a super-2 number, since 2×11881061² = 282319220971442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11881061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11880061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312641 + ... + 312678.

It is an arithmetic number, because the mean of its divisors is an integer number (3126600).

Almost surely, 2^11881061 is an apocalyptic number.

It is an amenable number.

11881061 is a deficient number, since it is larger than the sum of its proper divisors (625339).

11881061 is an equidigital number, since it uses as much as digits as its factorization.

11881061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625338.

The product of its (nonzero) digits is 384, while the sum is 26.

The square root of 11881061 is about 3446.8914981473. The cubic root of 11881061 is about 228.1839402592.

Adding to 11881061 its reverse (16018811), we get a palindrome (27899872).

The spelling of 11881061 in words is "eleven million, eight hundred eighty-one thousand, sixty-one".