55458578 has 8 divisors (see below), whose sum is σ = 95071872. Its totient is φ = 23767956.

The previous prime is 55458551. The next prime is 55458619. The reversal of 55458578 is 87585455.

It is a happy number.

55458578 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 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, 1980650 + ... + 1980677.

It is an arithmetic number, because the mean of its divisors is an integer number (11883984).

Almost surely, 2^55458578 is an apocalyptic number.

55458578 is a deficient number, since it is larger than the sum of its proper divisors (39613294).

55458578 is a wasteful number, since it uses less digits than its factorization.

55458578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961336.

The product of its digits is 1120000, while the sum is 47.

The square root of 55458578 is about 7447.0516313505. The cubic root of 55458578 is about 381.3492616933.

The spelling of 55458578 in words is "fifty-five million, four hundred fifty-eight thousand, five hundred seventy-eight".