55855855 has 8 divisors (see below), whose sum is σ = 73120464. Its totient is φ = 40622400.

The previous prime is 55855853. The next prime is 55855861.

55855855 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 55855855 - 2¹ = 55855853 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 (55855853) 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, 507726 + ... + 507835.

It is an arithmetic number, because the mean of its divisors is an integer number (9140058).

Almost surely, 2^55855855 is an apocalyptic number.

55855855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55855855 is a deficient number, since it is larger than the sum of its proper divisors (17264609).

55855855 is a wasteful number, since it uses less digits than its factorization.

55855855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015577.

The product of its digits is 1000000, while the sum is 46.

The square root of 55855855 is about 7473.6774749784. The cubic root of 55855855 is about 382.2576932326.

The spelling of 55855855 in words is "fifty-five million, eight hundred fifty-five thousand, eight hundred fifty-five".