2065504251 has 16 divisors (see below), whose sum is σ = 2778288128. Its totient is φ = 1364882400.

The previous prime is 2065504249. The next prime is 2065504279. The reversal of 2065504251 is 1524055602.

It is not a de Polignac number, because 2065504251 - 2¹ = 2065504249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2065504241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581541 + ... + 585081.

It is an arithmetic number, because the mean of its divisors is an integer number (173643008).

Almost surely, 2^2065504251 is an apocalyptic number.

2065504251 is a deficient number, since it is larger than the sum of its proper divisors (712783877).

2065504251 is a wasteful number, since it uses less digits than its factorization.

2065504251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5202.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2065504251 is about 45447.8189905742. The cubic root of 2065504251 is about 1273.5285859971.

Adding to 2065504251 its reverse (1524055602), we get a palindrome (3589559853).

The spelling of 2065504251 in words is "two billion, sixty-five million, five hundred four thousand, two hundred fifty-one".