55382785 has 4 divisors (see below), whose sum is σ = 66459348. Its totient is φ = 44306224.

The previous prime is 55382783. The next prime is 55382797. The reversal of 55382785 is 58728355.

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 26749584 + 28633201 = 5172^2 + 5351^2 .

It is a cyclic number.

It is not a de Polignac number, because 55382785 - 2¹ = 55382783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55382783) 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, 5538274 + ... + 5538283.

It is an arithmetic number, because the mean of its divisors is an integer number (16614837).

Almost surely, 2^55382785 is an apocalyptic number.

It is an amenable number.

55382785 is a deficient number, since it is larger than the sum of its proper divisors (11076563).

55382785 is a wasteful number, since it uses less digits than its factorization.

55382785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11076562.

The product of its digits is 336000, while the sum is 43.

The square root of 55382785 is about 7441.9610990652. The cubic root of 55382785 is about 381.1754576112.

It can be divided in two parts, 553 and 82785, that added together give a palindrome (83338).

The spelling of 55382785 in words is "fifty-five million, three hundred eighty-two thousand, seven hundred eighty-five".