11777955 has 32 divisors (see below), whose sum is σ = 22477824. Its totient is φ = 5149056.

The previous prime is 11777921. The next prime is 11777959. The reversal of 11777955 is 55977711.

It is a happy number.

It is not a de Polignac number, because 11777955 - 2¹⁶ = 11712419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11777959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24 + ... + 4853.

It is an arithmetic number, because the mean of its divisors is an integer number (702432).

Almost surely, 2^11777955 is an apocalyptic number.

11777955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11777955 is a deficient number, since it is larger than the sum of its proper divisors (10699869).

11777955 is a wasteful number, since it uses less digits than its factorization.

11777955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4915.

The product of its digits is 77175, while the sum is 42.

The square root of 11777955 is about 3431.9025335810. The cubic root of 11777955 is about 227.5219477276.

The spelling of 11777955 in words is "eleven million, seven hundred seventy-seven thousand, nine hundred fifty-five".