55855911 has 16 divisors (see below), whose sum is σ = 75449088. Its totient is φ = 36753600.

The previous prime is 55855909. The next prime is 55855951. The reversal of 55855911 is 11955855.

55855911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55855911 - 2¹ = 55855909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55855911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55855951) 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 15 ways as a sum of consecutive naturals, for example, 121995 + ... + 122451.

It is an arithmetic number, because the mean of its divisors is an integer number (4715568).

Almost surely, 2^55855911 is an apocalyptic number.

55855911 is a deficient number, since it is larger than the sum of its proper divisors (19593177).

55855911 is a wasteful number, since it uses less digits than its factorization.

55855911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902.

The product of its digits is 45000, while the sum is 39.

The square root of 55855911 is about 7473.6812214597. The cubic root of 55855911 is about 382.2578209807.

The spelling of 55855911 in words is "fifty-five million, eight hundred fifty-five thousand, nine hundred eleven".