2065511 has 4 divisors (see below), whose sum is σ = 2360592. Its totient is φ = 1770432.

The previous prime is 2065501. The next prime is 2065523. The reversal of 2065511 is 1155602.

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

It is a cyclic number.

It is not a de Polignac number, because 2065511 - 2¹⁰ = 2064487 is a prime.

It is a super-2 number, since 2×2065511² = 8532671382242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147530 + ... + 147543.

It is an arithmetic number, because the mean of its divisors is an integer number (590148).

2^2065511 is an apocalyptic number.

2065511 is a deficient number, since it is larger than the sum of its proper divisors (295081).

2065511 is an equidigital number, since it uses as much as digits as its factorization.

2065511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295080.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 2065511 is about 1437.1885749615. The cubic root of 2065511 is about 127.3529973073.

Subtracting from 2065511 its reverse (1155602), we obtain a palindrome (909909).

The spelling of 2065511 in words is "two million, sixty-five thousand, five hundred eleven".