2152665 has 12 divisors (see below), whose sum is σ = 3731364. Its totient is φ = 1148064.

The previous prime is 2152663. The next prime is 2152669. The reversal of 2152665 is 5662512.

It can be written as a sum of positive squares in 2 ways, for example, as 741321 + 1411344 = 861^2 + 1188^2 .

It is not a de Polignac number, because 2152665 - 2¹ = 2152663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2152663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23874 + ... + 23963.

It is an arithmetic number, because the mean of its divisors is an integer number (310947).

2^2152665 is an apocalyptic number.

It is an amenable number.

2152665 is a deficient number, since it is larger than the sum of its proper divisors (1578699).

2152665 is a wasteful number, since it uses less digits than its factorization.

2152665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47848 (or 47845 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2152665 is about 1467.1963058841. The cubic root of 2152665 is about 129.1195934376.

The spelling of 2152665 in words is "two million, one hundred fifty-two thousand, six hundred sixty-five".