2145516 has 12 divisors (see below), whose sum is σ = 5006232. Its totient is φ = 715168.

The previous prime is 2145497. The next prime is 2145529. The reversal of 2145516 is 6155412.

2145516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 89385 + ... + 89408.

It is an arithmetic number, because the mean of its divisors is an integer number (417186).

2^2145516 is an apocalyptic number.

It is an amenable number.

2145516 is an abundant number, since it is smaller than the sum of its proper divisors (2860716).

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

2145516 is a wasteful number, since it uses less digits than its factorization.

2145516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178800 (or 178798 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 2145516 is about 1464.7580004902. The cubic root of 2145516 is about 128.9764995350.

The spelling of 2145516 in words is "two million, one hundred forty-five thousand, five hundred sixteen".