11954155 has 4 divisors (see below), whose sum is σ = 14344992. Its totient is φ = 9563320.

The previous prime is 11954123. The next prime is 11954161. The reversal of 11954155 is 55145911.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11954155 - 2⁵ = 11954123 is a prime.

It is a Smith number, since the sum of its digits (31) 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195411 + ... + 1195420.

It is an arithmetic number, because the mean of its divisors is an integer number (3586248).

Almost surely, 2^11954155 is an apocalyptic number.

11954155 is a deficient number, since it is larger than the sum of its proper divisors (2390837).

11954155 is an equidigital number, since it uses as much as digits as its factorization.

11954155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390836.

The product of its digits is 4500, while the sum is 31.

The square root of 11954155 is about 3457.4781271904. The cubic root of 11954155 is about 228.6509240787.

The spelling of 11954155 in words is "eleven million, nine hundred fifty-four thousand, one hundred fifty-five".