55586145 has 16 divisors (see below), whose sum is σ = 89032320. Its totient is φ = 29614464.

The previous prime is 55586137. The next prime is 55586149. The reversal of 55586145 is 54168555.

It is not a de Polignac number, because 55586145 - 2³ = 55586137 is a prime.

It is a super-2 number, since 2×55586145² = 6179639031922050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55586149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22197 + ... + 24573.

It is an arithmetic number, because the mean of its divisors is an integer number (5564520).

Almost surely, 2^55586145 is an apocalyptic number.

It is an amenable number.

55586145 is a deficient number, since it is larger than the sum of its proper divisors (33446175).

55586145 is a wasteful number, since it uses less digits than its factorization.

55586145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944.

The product of its digits is 120000, while the sum is 39.

The square root of 55586145 is about 7455.6116449289. The cubic root of 55586145 is about 381.6414336803.

The spelling of 55586145 in words is "fifty-five million, five hundred eighty-six thousand, one hundred forty-five".