65280545 has 16 divisors (see below), whose sum is σ = 85802112. Its totient is φ = 47285760.

The previous prime is 65280541. The next prime is 65280547. The reversal of 65280545 is 54508256.

It is not a de Polignac number, because 65280545 - 2² = 65280541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65280541) 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 15 ways as a sum of consecutive naturals, for example, 12209 + ... + 16721.

It is an arithmetic number, because the mean of its divisors is an integer number (5362632).

Almost surely, 2^65280545 is an apocalyptic number.

It is an amenable number.

65280545 is a deficient number, since it is larger than the sum of its proper divisors (20521567).

65280545 is a wasteful number, since it uses less digits than its factorization.

65280545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792.

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 65280545 is about 8079.6376775200. The cubic root of 65280545 is about 402.6502043466.

The spelling of 65280545 in words is "sixty-five million, two hundred eighty thousand, five hundred forty-five".