2161512 has 32 divisors (see below), whose sum is σ = 6004800. Its totient is φ = 720432.

The previous prime is 2161493. The next prime is 2161513. The reversal of 2161512 is 2151612.

2161512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2161512² = 9344268252288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2161513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4788 + ... + 5219.

It is an arithmetic number, because the mean of its divisors is an integer number (187650).

2^2161512 is an apocalyptic number.

It is an amenable number.

2161512 is an abundant number, since it is smaller than the sum of its proper divisors (3843288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161512 is a wasteful number, since it uses less digits than its factorization.

2161512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10022 (or 10012 counting only the distinct ones).

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

The square root of 2161512 is about 1470.2081485286. The cubic root of 2161512 is about 129.2962364525.

It can be divided in two parts, 216151 and 2, that added together give a triangular number (216153 = T₆₅₇).

The spelling of 2161512 in words is "two million, one hundred sixty-one thousand, five hundred twelve".