2115155 has 16 divisors (see below), whose sum is σ = 2924544. Its totient is φ = 1438560.

The previous prime is 2115133. The next prime is 2115181. The reversal of 2115155 is 5515112.

2115155 = T₂₁₀ + T₂₁₁ + ... + T₂₇₉.

It is a happy number.

It is not a de Polignac number, because 2115155 - 2¹² = 2111059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7670 + ... + 7940.

It is an arithmetic number, because the mean of its divisors is an integer number (182784).

2^2115155 is an apocalyptic number.

2115155 is a deficient number, since it is larger than the sum of its proper divisors (809389).

2115155 is a wasteful number, since it uses less digits than its factorization.

2115155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506.

The product of its digits is 250, while the sum is 20.

The square root of 2115155 is about 1454.3572463463. The cubic root of 2115155 is about 128.3652288556.

The spelling of 2115155 in words is "two million, one hundred fifteen thousand, one hundred fifty-five".