55072111 has 8 divisors (see below), whose sum is σ = 55510400. Its totient is φ = 54636120.

The previous prime is 55072099. The next prime is 55072117. The reversal of 55072111 is 11127055.

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 55072111 - 2⁷ = 55071983 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 (55072117) 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, 125230 + ... + 125668.

It is an arithmetic number, because the mean of its divisors is an integer number (6938800).

Almost surely, 2^55072111 is an apocalyptic number.

55072111 is a deficient number, since it is larger than the sum of its proper divisors (438289).

55072111 is a wasteful number, since it uses less digits than its factorization.

55072111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 55072111 is about 7421.0586172055. The cubic root of 55072111 is about 380.4613763438.

Adding to 55072111 its reverse (11127055), we get a palindrome (66199166).

The spelling of 55072111 in words is "fifty-five million, seventy-two thousand, one hundred eleven".