11630155 has 12 divisors (see below), whose sum is σ = 14231376. Its totient is φ = 9122400.

The previous prime is 11630153. The next prime is 11630219. The reversal of 11630155 is 55103611.

It is not a de Polignac number, because 11630155 - 2¹ = 11630153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11630153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64165 + ... + 64345.

It is an arithmetic number, because the mean of its divisors is an integer number (1185948).

Almost surely, 2^11630155 is an apocalyptic number.

11630155 is a deficient number, since it is larger than the sum of its proper divisors (2601221).

11630155 is an frugal number, since it uses more digits than its factorization.

11630155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 11630155 is about 3410.3013063364. The cubic root of 11630155 is about 226.5662244810.

Adding to 11630155 its reverse (55103611), we get a palindrome (66733766).

The spelling of 11630155 in words is "eleven million, six hundred thirty thousand, one hundred fifty-five".