55634978 has 8 divisors (see below), whose sum is σ = 95374272. Its totient is φ = 23843556.

The previous prime is 55634977. The next prime is 55635011. The reversal of 55634978 is 87943655.

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 (55634977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1986950 + ... + 1986977.

It is an arithmetic number, because the mean of its divisors is an integer number (11921784).

Almost surely, 2^55634978 is an apocalyptic number.

55634978 is a deficient number, since it is larger than the sum of its proper divisors (39739294).

55634978 is a wasteful number, since it uses less digits than its factorization.

55634978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3973936.

The product of its digits is 907200, while the sum is 47.

The square root of 55634978 is about 7458.8858417327. The cubic root of 55634978 is about 381.7531596106.

The spelling of 55634978 in words is "fifty-five million, six hundred thirty-four thousand, nine hundred seventy-eight".