55210111 has 8 divisors (see below), whose sum is σ = 60286464. Its totient is φ = 50143320.

The previous prime is 55210091. The next prime is 55210123. The reversal of 55210111 is 11101255.

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

It is a cyclic number.

It is not a de Polignac number, because 55210111 - 2¹³ = 55201919 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 (55210711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15636 + ... + 18838.

It is an arithmetic number, because the mean of its divisors is an integer number (7535808).

Almost surely, 2^55210111 is an apocalyptic number.

55210111 is a deficient number, since it is larger than the sum of its proper divisors (5076353).

55210111 is a wasteful number, since it uses less digits than its factorization.

55210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4781.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 55210111 is about 7430.3506646726. The cubic root of 55210111 is about 380.7788986811.

Adding to 55210111 its reverse (11101255), we get a palindrome (66311366).

The spelling of 55210111 in words is "fifty-five million, two hundred ten thousand, one hundred eleven".