13213155 has 16 divisors (see below), whose sum is σ = 22060800. Its totient is φ = 6740448.

The previous prime is 13213153. The next prime is 13213159. The reversal of 13213155 is 55131231.

It is not a de Polignac number, because 13213155 - 2¹ = 13213153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13213153) 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, 18805 + ... + 19494.

It is an arithmetic number, because the mean of its divisors is an integer number (1378800).

Almost surely, 2^13213155 is an apocalyptic number.

13213155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13213155 is a deficient number, since it is larger than the sum of its proper divisors (8847645).

13213155 is a wasteful number, since it uses less digits than its factorization.

13213155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38330.

The product of its digits is 450, while the sum is 21.

The square root of 13213155 is about 3634.9903713765. The cubic root of 13213155 is about 236.4116331837.

Adding to 13213155 its reverse (55131231), we get a palindrome (68344386).

The spelling of 13213155 in words is "thirteen million, two hundred thirteen thousand, one hundred fifty-five".