55011505 has 4 divisors (see below), whose sum is σ = 66013812. Its totient is φ = 44009200.

The previous prime is 55011499. The next prime is 55011527. The reversal of 55011505 is 50511055.

55011505 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.

It can be written as a sum of positive squares in 2 ways, for example, as 36288576 + 18722929 = 6024^2 + 4327^2 .

It is not a de Polignac number, because 55011505 - 2⁹ = 55010993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 5501146 + ... + 5501155.

It is an arithmetic number, because the mean of its divisors is an integer number (16503453).

Almost surely, 2^55011505 is an apocalyptic number.

It is an amenable number.

55011505 is a deficient number, since it is larger than the sum of its proper divisors (11002307).

55011505 is a wasteful number, since it uses less digits than its factorization.

55011505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11002306.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 55011505 is about 7416.9741134778. The cubic root of 55011505 is about 380.3217611777.

The spelling of 55011505 in words is "fifty-five million, eleven thousand, five hundred five".