54520565 has 16 divisors (see below), whose sum is σ = 71559936. Its totient is φ = 39547200.

The previous prime is 54520553. The next prime is 54520567. The reversal of 54520565 is 56502545.

It is not a de Polignac number, because 54520565 - 2¹⁰ = 54519541 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 (54520567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24395 + ... + 26535.

It is an arithmetic number, because the mean of its divisors is an integer number (4472496).

Almost surely, 2^54520565 is an apocalyptic number.

54520565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54520565 is a deficient number, since it is larger than the sum of its proper divisors (17039371).

54520565 is a wasteful number, since it uses less digits than its factorization.

54520565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 54520565 is about 7383.8042362999. The cubic root of 54520565 is about 379.1870084217.

The spelling of 54520565 in words is "fifty-four million, five hundred twenty thousand, five hundred sixty-five".