55427277 has 8 divisors (see below), whose sum is σ = 73990816. Its totient is φ = 36907632.

The previous prime is 55427257. The next prime is 55427303. The reversal of 55427277 is 77272455.

55427277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55427277 - 2¹⁰ = 55426253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55427227) 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 7 ways as a sum of consecutive naturals, for example, 7903 + ... + 13164.

It is an arithmetic number, because the mean of its divisors is an integer number (9248852).

Almost surely, 2^55427277 is an apocalyptic number.

It is an amenable number.

55427277 is a deficient number, since it is larger than the sum of its proper divisors (18563539).

55427277 is a wasteful number, since it uses less digits than its factorization.

55427277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21947.

The product of its digits is 137200, while the sum is 39.

The square root of 55427277 is about 7444.9497647734. The cubic root of 55427277 is about 381.2775032743.

The spelling of 55427277 in words is "fifty-five million, four hundred twenty-seven thousand, two hundred seventy-seven".