11915055 has 12 divisors (see below), whose sum is σ = 20652840. Its totient is φ = 6354672.

The previous prime is 11915047. The next prime is 11915063. The reversal of 11915055 is 55051911.

It is an interprime number because it is at equal distance from previous prime (11915047) and next prime (11915063).

It is not a de Polignac number, because 11915055 - 2³ = 11915047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132345 + ... + 132434.

It is an arithmetic number, because the mean of its divisors is an integer number (1721070).

Almost surely, 2^11915055 is an apocalyptic number.

11915055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11915055 is a deficient number, since it is larger than the sum of its proper divisors (8737785).

11915055 is a wasteful number, since it uses less digits than its factorization.

11915055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264790 (or 264787 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 27.

The square root of 11915055 is about 3451.8190856417. The cubic root of 11915055 is about 228.4013590746.

Adding to 11915055 its reverse (55051911), we get a palindrome (66966966).

The spelling of 11915055 in words is "eleven million, nine hundred fifteen thousand, fifty-five".