11816051 has 4 divisors (see below), whose sum is σ = 12724992. Its totient is φ = 10907112.

The previous prime is 11816029. The next prime is 11816087. The reversal of 11816051 is 15061811.

It is a happy number.

11816051 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11816051 is a prime.

It is a super-2 number, since 2×11816051² = 279238122469202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11816011) 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, 454451 + ... + 454476.

It is an arithmetic number, because the mean of its divisors is an integer number (3181248).

Almost surely, 2^11816051 is an apocalyptic number.

11816051 is a deficient number, since it is larger than the sum of its proper divisors (908941).

11816051 is an equidigital number, since it uses as much as digits as its factorization.

11816051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908940.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 11816051 is about 3437.4483268843. The cubic root of 11816051 is about 227.7669916147.

Adding to 11816051 its reverse (15061811), we get a palindrome (26877862).

The spelling of 11816051 in words is "eleven million, eight hundred sixteen thousand, fifty-one".