55831478 has 8 divisors (see below), whose sum is σ = 83780568. Its totient is φ = 27904624.

The previous prime is 55831469. The next prime is 55831499. The reversal of 55831478 is 87413855.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4025 + ... + 11307.

It is an arithmetic number, because the mean of its divisors is an integer number (10472571).

Almost surely, 2^55831478 is an apocalyptic number.

55831478 is a deficient number, since it is larger than the sum of its proper divisors (27949090).

55831478 is a wasteful number, since it uses less digits than its factorization.

55831478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11118.

The product of its digits is 134400, while the sum is 41.

The square root of 55831478 is about 7472.0464398985. The cubic root of 55831478 is about 382.2020759555.

The spelling of 55831478 in words is "fifty-five million, eight hundred thirty-one thousand, four hundred seventy-eight".