55407678 has 8 divisors (see below), whose sum is σ = 110815368. Its totient is φ = 18469224.

The previous prime is 55407659. The next prime is 55407731. The reversal of 55407678 is 87670455.

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

55407678 is an admirable number.

It is a congruent number.

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, 4617301 + ... + 4617312.

It is an arithmetic number, because the mean of its divisors is an integer number (13851921).

Almost surely, 2^55407678 is an apocalyptic number.

55407678 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.

55407678 is a wasteful number, since it uses less digits than its factorization.

55407678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9234618.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 55407678 is about 7443.6333869959. The cubic root of 55407678 is about 381.2325582633.

The spelling of 55407678 in words is "fifty-five million, four hundred seven thousand, six hundred seventy-eight".