11497855 has 4 divisors (see below), whose sum is σ = 13797432. Its totient is φ = 9198280.

The previous prime is 11497841. The next prime is 11497859. The reversal of 11497855 is 55879411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55879411 = 7 ⋅7982773.

It is not a de Polignac number, because 11497855 - 2⁵ = 11497823 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11497859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1149781 + ... + 1149790.

It is an arithmetic number, because the mean of its divisors is an integer number (3449358).

Almost surely, 2^11497855 is an apocalyptic number.

11497855 is a deficient number, since it is larger than the sum of its proper divisors (2299577).

11497855 is an equidigital number, since it uses as much as digits as its factorization.

11497855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299576.

The product of its digits is 50400, while the sum is 40.

The square root of 11497855 is about 3390.8487138178. The cubic root of 11497855 is about 225.7038371377.

It can be divided in two parts, 114 and 97855, that added together give a square (97969 = 313²).

The spelling of 11497855 in words is "eleven million, four hundred ninety-seven thousand, eight hundred fifty-five".