11215955 has 12 divisors (see below), whose sum is σ = 13945152. Its totient is φ = 8651040.

The previous prime is 11215951. The next prime is 11215969. The reversal of 11215955 is 55951211.

11215955 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11215955 - 2² = 11215951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11215951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41561 + ... + 41829.

It is an arithmetic number, because the mean of its divisors is an integer number (1162096).

Almost surely, 2^11215955 is an apocalyptic number.

11215955 is a deficient number, since it is larger than the sum of its proper divisors (2729197).

11215955 is an frugal number, since it uses more digits than its factorization.

11215955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 305 counting only the distinct ones).

The product of its digits is 2250, while the sum is 29.

The square root of 11215955 is about 3349.0229918590. The cubic root of 11215955 is about 223.8439801621.

The spelling of 11215955 in words is "eleven million, two hundred fifteen thousand, nine hundred fifty-five".