55227709 has 12 divisors (see below), whose sum is σ = 57733020. Its totient is φ = 52824000.

The previous prime is 55227707. The next prime is 55227719. The reversal of 55227709 is 90772255.

It can be written as a sum of positive squares in 2 ways, for example, as 33605209 + 21622500 = 5797^2 + 4650^2 .

It is not a de Polignac number, because 55227709 - 2¹ = 55227707 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 (55227707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96777 + ... + 97345.

It is an arithmetic number, because the mean of its divisors is an integer number (4811085).

Almost surely, 2^55227709 is an apocalyptic number.

It is an amenable number.

55227709 is a deficient number, since it is larger than the sum of its proper divisors (2505311).

55227709 is a wasteful number, since it uses less digits than its factorization.

55227709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 55227709 is about 7431.5347674622. The cubic root of 55227709 is about 380.8193516289.

It can be divided in two parts, 5522 and 7709, that added together give a palindrome (13231).

The spelling of 55227709 in words is "fifty-five million, two hundred twenty-seven thousand, seven hundred nine".