55506111 has 8 divisors (see below), whose sum is σ = 74945280. Its totient is φ = 36535512.

The previous prime is 55506109. The next prime is 55506127. The reversal of 55506111 is 11160555.

55506111 is nontrivially palindromic in base 13.

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

It is not a de Polignac number, because 55506111 - 2¹ = 55506109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55506131) 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, 116865 + ... + 117338.

It is an arithmetic number, because the mean of its divisors is an integer number (9368160).

Almost surely, 2^55506111 is an apocalyptic number.

55506111 is a deficient number, since it is larger than the sum of its proper divisors (19439169).

55506111 is a wasteful number, since it uses less digits than its factorization.

55506111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234285.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 55506111 is about 7450.2423450516. The cubic root of 55506111 is about 381.4581808112.

Adding to 55506111 its reverse (11160555), we get a palindrome (66666666).

The spelling of 55506111 in words is "fifty-five million, five hundred six thousand, one hundred eleven".