65405053 has 6 divisors (see below), whose sum is σ = 76083486. Its totient is φ = 56061432.

The previous prime is 65405051. The next prime is 65405057. The reversal of 65405053 is 35050456.

65405053 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 only one way, i.e., 63011844 + 2393209 = 7938^2 + 1547^2 .

It is not a de Polignac number, because 65405053 - 2¹ = 65405051 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 (65405051) 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 5 ways as a sum of consecutive naturals, for example, 667350 + ... + 667447.

It is an arithmetic number, because the mean of its divisors is an integer number (12680581).

Almost surely, 2^65405053 is an apocalyptic number.

It is an amenable number.

65405053 is a deficient number, since it is larger than the sum of its proper divisors (10678433).

65405053 is a wasteful number, since it uses less digits than its factorization.

65405053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334811 (or 1334804 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 65405053 is about 8087.3390555856. The cubic root of 65405053 is about 402.9060300947.

The spelling of 65405053 in words is "sixty-five million, four hundred five thousand, fifty-three".