55931406 has 8 divisors (see below), whose sum is σ = 111862824. Its totient is φ = 18643800.

The previous prime is 55931389. The next prime is 55931429. The reversal of 55931406 is 60413955.

It is a happy number.

55931406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

55931406 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4660945 + ... + 4660956.

It is an arithmetic number, because the mean of its divisors is an integer number (13982853).

Almost surely, 2^55931406 is an apocalyptic number.

55931406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55931406 is a wasteful number, since it uses less digits than its factorization.

55931406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9321906.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 55931406 is about 7478.7302398201. The cubic root of 55931406 is about 382.4299636818.

The spelling of 55931406 in words is "fifty-five million, nine hundred thirty-one thousand, four hundred six".