2045511 has 12 divisors (see below), whose sum is σ = 3182088. Its totient is φ = 1258704.

The previous prime is 2045509. The next prime is 2045539. The reversal of 2045511 is 1155402.

It is not a de Polignac number, because 2045511 - 2¹ = 2045509 is a prime.

It is a super-2 number, since 2×2045511² = 8368230502242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045591) 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 11 ways as a sum of consecutive naturals, for example, 8625 + ... + 8858.

It is an arithmetic number, because the mean of its divisors is an integer number (265174).

2^2045511 is an apocalyptic number.

2045511 is a deficient number, since it is larger than the sum of its proper divisors (1136577).

2045511 is a wasteful number, since it uses less digits than its factorization.

2045511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17502 (or 17499 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2045511 is about 1430.2136204078. The cubic root of 2045511 is about 126.9406174529.

It can be divided in two parts, 2045 and 511, that added together give a triangular number (2556 = T₇₁).

The spelling of 2045511 in words is "two million, forty-five thousand, five hundred eleven".