54257785 has 4 divisors (see below), whose sum is σ = 65109348. Its totient is φ = 43406224.

The previous prime is 54257779. The next prime is 54257789. The reversal of 54257785 is 58775245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26915344 + 27342441 = 5188^2 + 5229^2 .

It is a cyclic number.

It is not a de Polignac number, because 54257785 - 2¹¹ = 54255737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54257789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5425774 + ... + 5425783.

It is an arithmetic number, because the mean of its divisors is an integer number (16277337).

Almost surely, 2^54257785 is an apocalyptic number.

It is an amenable number.

54257785 is a deficient number, since it is larger than the sum of its proper divisors (10851563).

54257785 is a wasteful number, since it uses less digits than its factorization.

54257785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10851562.

The product of its digits is 392000, while the sum is 43.

The square root of 54257785 is about 7365.9883926056. The cubic root of 54257785 is about 378.5768210593.

The spelling of 54257785 in words is "fifty-four million, two hundred fifty-seven thousand, seven hundred eighty-five".