11620155 has 16 divisors (see below), whose sum is σ = 19234080. Its totient is φ = 5983488.

The previous prime is 11620121. The next prime is 11620157. The reversal of 11620155 is 55102611.

11620155 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 11620155 - 2¹¹ = 11618107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11620157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12922 + ... + 13791.

It is an arithmetic number, because the mean of its divisors is an integer number (1202130).

Almost surely, 2^11620155 is an apocalyptic number.

11620155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11620155 is a deficient number, since it is larger than the sum of its proper divisors (7613925).

11620155 is a wasteful number, since it uses less digits than its factorization.

11620155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26750.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 11620155 is about 3408.8348449287. The cubic root of 11620155 is about 226.5012694304.

Adding to 11620155 its reverse (55102611), we get a palindrome (66722766).

The spelling of 11620155 in words is "eleven million, six hundred twenty thousand, one hundred fifty-five".