2152345 has 8 divisors (see below), whose sum is σ = 2781576. Its totient is φ = 1589376.

The previous prime is 2152343. The next prime is 2152357. The reversal of 2152345 is 5432512.

2152345 = 149² + 150² + ... + 213².

2152345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 256 + 2152089 = 16^2 + 1467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2152345 - 2¹ = 2152343 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152343) 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, 16492 + ... + 16621.

It is an arithmetic number, because the mean of its divisors is an integer number (347697).

2^2152345 is an apocalyptic number.

It is an amenable number.

2152345 is a deficient number, since it is larger than the sum of its proper divisors (629231).

2152345 is a wasteful number, since it uses less digits than its factorization.

2152345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33131.

The product of its digits is 1200, while the sum is 22.

The square root of 2152345 is about 1467.0872503024. The cubic root of 2152345 is about 129.1131951178.

Adding to 2152345 its reverse (5432512), we get a palindrome (7584857).

The spelling of 2152345 in words is "two million, one hundred fifty-two thousand, three hundred forty-five".