55546191 has 12 divisors (see below), whose sum is σ = 84953232. Its totient is φ = 34852416.

The previous prime is 55546189. The next prime is 55546217. The reversal of 55546191 is 19164555.

It is not a de Polignac number, because 55546191 - 2¹ = 55546189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55546121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181371 + ... + 181676.

It is an arithmetic number, because the mean of its divisors is an integer number (7079436).

Almost surely, 2^55546191 is an apocalyptic number.

55546191 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55546191 is a deficient number, since it is larger than the sum of its proper divisors (29407041).

55546191 is a wasteful number, since it uses less digits than its factorization.

55546191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363070 (or 363067 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 55546191 is about 7452.9317050406. The cubic root of 55546191 is about 381.5499734995.

The spelling of 55546191 in words is "fifty-five million, five hundred forty-six thousand, one hundred ninety-one".