55586477 has 4 divisors (see below), whose sum is σ = 56769216. Its totient is φ = 54403740.

The previous prime is 55586431. The next prime is 55586491. The reversal of 55586477 is 77468555.

55586477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77468555 = 5 ⋅15493711.

It is a cyclic number.

It is not a de Polignac number, because 55586477 - 2⁸ = 55586221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 1182691 = 55586477 / (5 + 5 + 5 + 8 + 6 + 4 + 7 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55586177) 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 3 ways as a sum of consecutive naturals, for example, 591299 + ... + 591392.

It is an arithmetic number, because the mean of its divisors is an integer number (14192304).

Almost surely, 2^55586477 is an apocalyptic number.

It is an amenable number.

55586477 is a deficient number, since it is larger than the sum of its proper divisors (1182739).

55586477 is a wasteful number, since it uses less digits than its factorization.

55586477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182738.

The product of its digits is 1176000, while the sum is 47.

The square root of 55586477 is about 7455.6339100039. The cubic root of 55586477 is about 381.6421934902.

The spelling of 55586477 in words is "fifty-five million, five hundred eighty-six thousand, four hundred seventy-seven".