2215161 has 16 divisors (see below), whose sum is σ = 3534720. Its totient is φ = 1362960.

The previous prime is 2215159. The next prime is 2215163. The reversal of 2215161 is 1615122.

It is an interprime number because it is at equal distance from previous prime (2215159) and next prime (2215163).

It is not a de Polignac number, because 2215161 - 2¹ = 2215159 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2215163) 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, 2805 + ... + 3506.

It is an arithmetic number, because the mean of its divisors is an integer number (220920).

2^2215161 is an apocalyptic number.

It is an amenable number.

2215161 is a deficient number, since it is larger than the sum of its proper divisors (1319559).

2215161 is a wasteful number, since it uses less digits than its factorization.

2215161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333 (or 6327 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 2215161 is about 1488.3416946387. The cubic root of 2215161 is about 130.3572226291.

The spelling of 2215161 in words is "two million, two hundred fifteen thousand, one hundred sixty-one".