2053511 has 4 divisors (see below), whose sum is σ = 2073552. Its totient is φ = 2033472.

The previous prime is 2053507. The next prime is 2053517. The reversal of 2053511 is 1153502.

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 2053511 - 2² = 2053507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2053511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2053517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9866 + ... + 10071.

It is an arithmetic number, because the mean of its divisors is an integer number (518388).

2^2053511 is an apocalyptic number.

2053511 is a deficient number, since it is larger than the sum of its proper divisors (20041).

2053511 is a wasteful number, since it uses less digits than its factorization.

2053511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20040.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 2053511 is about 1433.0076761832. The cubic root of 2053511 is about 127.1058905642.

Subtracting from 2053511 its reverse (1153502), we obtain a palindrome (900009).

The spelling of 2053511 in words is "two million, fifty-three thousand, five hundred eleven".