55831666 has 8 divisors (see below), whose sum is σ = 91360944. Its totient is φ = 25378020.

The previous prime is 55831663. The next prime is 55831669. The reversal of 55831666 is 66613855.

It is an interprime number because it is at equal distance from previous prime (55831663) and next prime (55831669).

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

It is not an unprimeable number, because it can be changed into a prime (55831663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268880 + ... + 1268923.

It is an arithmetic number, because the mean of its divisors is an integer number (11420118).

Almost surely, 2^55831666 is an apocalyptic number.

55831666 is a deficient number, since it is larger than the sum of its proper divisors (35529278).

55831666 is a wasteful number, since it uses less digits than its factorization.

55831666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537816.

The product of its digits is 129600, while the sum is 40.

The square root of 55831666 is about 7472.0590201095. The cubic root of 55831666 is about 382.2025049483.

The spelling of 55831666 in words is "fifty-five million, eight hundred thirty-one thousand, six hundred sixty-six".