55727405 has 8 divisors (see below), whose sum is σ = 68504184. Its totient is φ = 43494400.

The previous prime is 55727401. The next prime is 55727407. The reversal of 55727405 is 50472755.

It is a happy number.

55727405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8213956 + 47513449 = 2866^2 + 6893^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55727405 - 2² = 55727401 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 (55727401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135716 + ... + 136125.

It is an arithmetic number, because the mean of its divisors is an integer number (8563023).

Almost surely, 2^55727405 is an apocalyptic number.

It is an amenable number.

55727405 is a deficient number, since it is larger than the sum of its proper divisors (12776779).

55727405 is a wasteful number, since it uses less digits than its factorization.

55727405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271887.

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 55727405 is about 7465.0790350806. The cubic root of 55727405 is about 381.9644462218.

The spelling of 55727405 in words is "fifty-five million, seven hundred twenty-seven thousand, four hundred five".