55194491 has 8 divisors (see below), whose sum is σ = 61839984. Its totient is φ = 48820320.

The previous prime is 55194481. The next prime is 55194493. The reversal of 55194491 is 19449155.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55194491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55194493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67400 + ... + 68213.

It is an arithmetic number, because the mean of its divisors is an integer number (7729998).

Almost surely, 2^55194491 is an apocalyptic number.

55194491 is a deficient number, since it is larger than the sum of its proper divisors (6645493).

55194491 is a wasteful number, since it uses less digits than its factorization.

55194491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135661.

The product of its digits is 32400, while the sum is 38.

The square root of 55194491 is about 7429.2994959148. The cubic root of 55194491 is about 380.7429854079.

The spelling of 55194491 in words is "fifty-five million, one hundred ninety-four thousand, four hundred ninety-one".