54243785 has 4 divisors (see below), whose sum is σ = 65092548. Its totient is φ = 43395024.

The previous prime is 54243733. The next prime is 54243793. The reversal of 54243785 is 58734245.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58734245 = 5 ⋅11746849.

It can be written as a sum of positive squares in 2 ways, for example, as 17131321 + 37112464 = 4139^2 + 6092^2 .

It is a cyclic number.

It is not a de Polignac number, because 54243785 - 2⁸ = 54243529 is a prime.

It is a super-5 number, since 5×54243785⁵ (a number of 40 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5424374 + ... + 5424383.

It is an arithmetic number, because the mean of its divisors is an integer number (16273137).

Almost surely, 2^54243785 is an apocalyptic number.

It is an amenable number.

54243785 is a deficient number, since it is larger than the sum of its proper divisors (10848763).

54243785 is a wasteful number, since it uses less digits than its factorization.

54243785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10848762.

The product of its digits is 134400, while the sum is 38.

The square root of 54243785 is about 7365.0380175529. The cubic root of 54243785 is about 378.5442571829.

The spelling of 54243785 in words is "fifty-four million, two hundred forty-three thousand, seven hundred eighty-five".