27561055 has 8 divisors (see below), whose sum is σ = 33206544. Its totient is φ = 21960000.

The previous prime is 27561047. The next prime is 27561073. The reversal of 27561055 is 55016572.

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

It is not a de Polignac number, because 27561055 - 2³ = 27561047 is a prime.

It is a super-2 number, since 2×27561055² = 1519223505426050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 9726 + ... + 12235.

It is an arithmetic number, because the mean of its divisors is an integer number (4150818).

Almost surely, 2^27561055 is an apocalyptic number.

27561055 is a deficient number, since it is larger than the sum of its proper divisors (5645489).

27561055 is a wasteful number, since it uses less digits than its factorization.

27561055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22217.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 27561055 is about 5249.8623791486. The cubic root of 27561055 is about 302.0637520192.

The spelling of 27561055 in words is "twenty-seven million, five hundred sixty-one thousand, fifty-five".