55130911 has 4 divisors (see below), whose sum is σ = 60142824. Its totient is φ = 50119000.

The previous prime is 55130909. The next prime is 55130921. The reversal of 55130911 is 11903155.

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 55130911 - 2¹ = 55130909 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 (55130921) 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, 2505940 + ... + 2505961.

It is an arithmetic number, because the mean of its divisors is an integer number (15035706).

Almost surely, 2^55130911 is an apocalyptic number.

55130911 is a deficient number, since it is larger than the sum of its proper divisors (5011913).

55130911 is a wasteful number, since it uses less digits than its factorization.

55130911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011912.

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 55130911 is about 7425.0192592343. The cubic root of 55130911 is about 380.5967332508.

The spelling of 55130911 in words is "fifty-five million, one hundred thirty thousand, nine hundred eleven".