55831906 has 8 divisors (see below), whose sum is σ = 90190044. Its totient is φ = 25768560.

The previous prime is 55831849. The next prime is 55831921. The reversal of 55831906 is 60913855.

It can be written as a sum of positive squares in 2 ways, for example, as 54154881 + 1677025 = 7359^2 + 1295^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073665 + ... + 1073716.

Almost surely, 2^55831906 is an apocalyptic number.

55831906 is a deficient number, since it is larger than the sum of its proper divisors (34358138).

55831906 is a wasteful number, since it uses less digits than its factorization.

55831906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147396.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 55831906 is about 7472.0750799226. The cubic root of 55831906 is about 382.2030525973.

The spelling of 55831906 in words is "fifty-five million, eight hundred thirty-one thousand, nine hundred six".