65545265 has 8 divisors (see below), whose sum is σ = 80572968. Its totient is φ = 51157120.

The previous prime is 65545261. The next prime is 65545267. The reversal of 65545265 is 56254556.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3182656 + 62362609 = 1784^2 + 7897^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65545265 - 2² = 65545261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65545261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159662 + ... + 160071.

It is an arithmetic number, because the mean of its divisors is an integer number (10071621).

Almost surely, 2^65545265 is an apocalyptic number.

It is an amenable number.

65545265 is a deficient number, since it is larger than the sum of its proper divisors (15027703).

65545265 is a wasteful number, since it uses less digits than its factorization.

65545265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319779.

The product of its digits is 180000, while the sum is 38.

The square root of 65545265 is about 8096.0030261852. The cubic root of 65545265 is about 403.1937343688.

The spelling of 65545265 in words is "sixty-five million, five hundred forty-five thousand, two hundred sixty-five".