55486505 has 4 divisors (see below), whose sum is σ = 66583812. Its totient is φ = 44389200.

The previous prime is 55486499. The next prime is 55486513. The reversal of 55486505 is 50568455.

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 35200489 + 20286016 = 5933^2 + 4504^2 .

It is not a de Polignac number, because 55486505 - 2¹⁰ = 55485481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5548646 + ... + 5548655.

It is an arithmetic number, because the mean of its divisors is an integer number (16645953).

Almost surely, 2^55486505 is an apocalyptic number.

It is an amenable number.

55486505 is a deficient number, since it is larger than the sum of its proper divisors (11097307).

55486505 is a wasteful number, since it uses less digits than its factorization.

55486505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11097306.

The product of its (nonzero) digits is 120000, while the sum is 38.

The square root of 55486505 is about 7448.9264327150. The cubic root of 55486505 is about 381.4132623347.

The spelling of 55486505 in words is "fifty-five million, four hundred eighty-six thousand, five hundred five".