55256311 has 4 divisors (see below), whose sum is σ = 60279624. Its totient is φ = 50233000.

The previous prime is 55256293. The next prime is 55256317. The reversal of 55256311 is 11365255.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55256311 - 2¹¹ = 55254263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55256311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55256317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2511640 + ... + 2511661.

It is an arithmetic number, because the mean of its divisors is an integer number (15069906).

Almost surely, 2^55256311 is an apocalyptic number.

55256311 is a deficient number, since it is larger than the sum of its proper divisors (5023313).

55256311 is a wasteful number, since it uses less digits than its factorization.

55256311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5023312.

The product of its digits is 4500, while the sum is 28.

The square root of 55256311 is about 7433.4588853373. The cubic root of 55256311 is about 380.8850814079.

The spelling of 55256311 in words is "fifty-five million, two hundred fifty-six thousand, three hundred eleven".