55504478 has 8 divisors (see below), whose sum is σ = 83440272. Its totient is φ = 27691056.

The previous prime is 55504441. The next prime is 55504489. The reversal of 55504478 is 87440555.

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

It is a Curzon number.

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, 29450 + ... + 31277.

It is an arithmetic number, because the mean of its divisors is an integer number (10430034).

Almost surely, 2^55504478 is an apocalyptic number.

55504478 is a deficient number, since it is larger than the sum of its proper divisors (27935794).

55504478 is a wasteful number, since it uses less digits than its factorization.

55504478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61186.

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 55504478 is about 7450.1327504951. The cubic root of 55504478 is about 381.4544399179.

The spelling of 55504478 in words is "fifty-five million, five hundred four thousand, four hundred seventy-eight".