65431045 has 12 divisors (see below), whose sum is σ = 83409444. Its totient is φ = 49264640.

The previous prime is 65431043. The next prime is 65431081. The reversal of 65431045 is 54013456.

65431045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 11276164 + 54154881 = 3358^2 + 7359^2 .

It is not a de Polignac number, because 65431045 - 2¹ = 65431043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65431043) 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, 21196 + ... + 24085.

It is an arithmetic number, because the mean of its divisors is an integer number (6950787).

Almost surely, 2^65431045 is an apocalyptic number.

It is an amenable number.

65431045 is a deficient number, since it is larger than the sum of its proper divisors (17978399).

65431045 is a wasteful number, since it uses less digits than its factorization.

65431045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45320 (or 45303 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 65431045 is about 8088.9458522109. The cubic root of 65431045 is about 402.9593947106.

The spelling of 65431045 in words is "sixty-five million, four hundred thirty-one thousand, forty-five".