55355578 has 8 divisors (see below), whose sum is σ = 83064960. Its totient is φ = 27667260.

The previous prime is 55355563. The next prime is 55355579. The reversal of 55355578 is 87555355.

55355578 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.

It is not an unprimeable number, because it can be changed into a prime (55355579) by changing a digit.

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, 7383 + ... + 12853.

It is an arithmetic number, because the mean of its divisors is an integer number (10383120).

Almost surely, 2^55355578 is an apocalyptic number.

55355578 is a deficient number, since it is larger than the sum of its proper divisors (27709382).

55355578 is a wasteful number, since it uses less digits than its factorization.

55355578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10532.

The product of its digits is 525000, while the sum is 43.

The square root of 55355578 is about 7440.1329289200. The cubic root of 55355578 is about 381.1130294317.

The spelling of 55355578 in words is "fifty-five million, three hundred fifty-five thousand, five hundred seventy-eight".