2115161 has 8 divisors (see below), whose sum is σ = 2216448. Its totient is φ = 2018100.

The previous prime is 2115133. The next prime is 2115181. The reversal of 2115161 is 1615112.

It is not a de Polignac number, because 2115161 - 2⁶ = 2115097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29756 + ... + 29826.

It is an arithmetic number, because the mean of its divisors is an integer number (277056).

2^2115161 is an apocalyptic number.

It is an amenable number.

2115161 is a deficient number, since it is larger than the sum of its proper divisors (101287).

2115161 is an frugal number, since it uses more digits than its factorization.

2115161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 102 counting only the distinct ones).

The product of its digits is 60, while the sum is 17.

The square root of 2115161 is about 1454.3593091117. The cubic root of 2115161 is about 128.3653502321.

It can be divided in two parts, 21151 and 61, that added together give a palindrome (21212).

The spelling of 2115161 in words is "two million, one hundred fifteen thousand, one hundred sixty-one".