2113155 has 32 divisors (see below), whose sum is σ = 4101120. Its totient is φ = 1023840.

The previous prime is 2113147. The next prime is 2113159. The reversal of 2113155 is 5513112.

It is not a de Polignac number, because 2113155 - 2³ = 2113147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2113159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 774 + ... + 2196.

It is an arithmetic number, because the mean of its divisors is an integer number (128160).

2^2113155 is an apocalyptic number.

2113155 is a deficient number, since it is larger than the sum of its proper divisors (1987965).

2113155 is a wasteful number, since it uses less digits than its factorization.

2113155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448 (or 1442 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 2113155 is about 1453.6694947614. The cubic root of 2113155 is about 128.3247572088.

Adding to 2113155 its reverse (5513112), we get a palindrome (7626267).

The spelling of 2113155 in words is "two million, one hundred thirteen thousand, one hundred fifty-five".