55191954 has 8 divisors (see below), whose sum is σ = 110383920. Its totient is φ = 18397316.

The previous prime is 55191953. The next prime is 55191967. The reversal of 55191954 is 45919155.

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

55191954 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55191953) 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, 4599324 + ... + 4599335.

It is an arithmetic number, because the mean of its divisors is an integer number (13797990).

Almost surely, 2^55191954 is an apocalyptic number.

55191954 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.

55191954 is a wasteful number, since it uses less digits than its factorization.

55191954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9198664.

The product of its digits is 40500, while the sum is 39.

The square root of 55191954 is about 7429.1287510717. The cubic root of 55191954 is about 380.7371517354.

The spelling of 55191954 in words is "fifty-five million, one hundred ninety-one thousand, nine hundred fifty-four".