55466191 has 4 divisors (see below), whose sum is σ = 60508584. Its totient is φ = 50423800.

The previous prime is 55466171. The next prime is 55466227. The reversal of 55466191 is 19166455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55466191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55466191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55466171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2521180 + ... + 2521201.

It is an arithmetic number, because the mean of its divisors is an integer number (15127146).

Almost surely, 2^55466191 is an apocalyptic number.

55466191 is a deficient number, since it is larger than the sum of its proper divisors (5042393).

55466191 is a wasteful number, since it uses less digits than its factorization.

55466191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042392.

The product of its digits is 32400, while the sum is 37.

The square root of 55466191 is about 7447.5627556940. The cubic root of 55466191 is about 381.3667106267.

The spelling of 55466191 in words is "fifty-five million, four hundred sixty-six thousand, one hundred ninety-one".