2152765 has 4 divisors (see below), whose sum is σ = 2583324. Its totient is φ = 1722208.

The previous prime is 2152753. The next prime is 2152783. The reversal of 2152765 is 5672512.

2152765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 811801 + 1340964 = 901^2 + 1158^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152765 - 2⁷ = 2152637 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 215272 + ... + 215281.

It is an arithmetic number, because the mean of its divisors is an integer number (645831).

2^2152765 is an apocalyptic number.

It is an amenable number.

2152765 is a deficient number, since it is larger than the sum of its proper divisors (430559).

2152765 is an equidigital number, since it uses as much as digits as its factorization.

2152765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430558.

The product of its digits is 4200, while the sum is 28.

The square root of 2152765 is about 1467.2303840911. The cubic root of 2152765 is about 129.1215927825.

The spelling of 2152765 in words is "two million, one hundred fifty-two thousand, seven hundred sixty-five".