54185565 has 16 divisors (see below), whose sum is σ = 99082368. Its totient is φ = 24770496.

The previous prime is 54185533. The next prime is 54185597. The reversal of 54185565 is 56558145.

It is an interprime number because it is at equal distance from previous prime (54185533) and next prime (54185597).

It is not a de Polignac number, because 54185565 - 2⁵ = 54185533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257922 + ... + 258131.

It is an arithmetic number, because the mean of its divisors is an integer number (6192648).

Almost surely, 2^54185565 is an apocalyptic number.

It is an amenable number.

54185565 is a deficient number, since it is larger than the sum of its proper divisors (44896803).

54185565 is a wasteful number, since it uses less digits than its factorization.

54185565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516068.

The product of its digits is 120000, while the sum is 39.

The square root of 54185565 is about 7361.0844989037. The cubic root of 54185565 is about 378.4087778456.

The spelling of 54185565 in words is "fifty-four million, one hundred eighty-five thousand, five hundred sixty-five".