55615111 has 8 divisors (see below), whose sum is σ = 56914560. Its totient is φ = 54327672.

The previous prime is 55615093. The next prime is 55615117. The reversal of 55615111 is 11151655.

55615111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55615111 - 2¹⁵ = 55582343 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 (55615117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6726 + ... + 12508.

It is an arithmetic number, because the mean of its divisors is an integer number (7114320).

Almost surely, 2^55615111 is an apocalyptic number.

55615111 is a deficient number, since it is larger than the sum of its proper divisors (1299449).

55615111 is a wasteful number, since it uses less digits than its factorization.

55615111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005.

The product of its digits is 750, while the sum is 25.

The square root of 55615111 is about 7457.5539555541. The cubic root of 55615111 is about 381.7077134228.

Adding to 55615111 its reverse (11151655), we get a palindrome (66766766).

The spelling of 55615111 in words is "fifty-five million, six hundred fifteen thousand, one hundred eleven".