55342191 has 8 divisors (see below), whose sum is σ = 78130224. Its totient is φ = 34724480.

The previous prime is 55342153. The next prime is 55342213. The reversal of 55342191 is 19124355.

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

It is a cyclic number.

It is not a de Polignac number, because 55342191 - 2¹¹ = 55340143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55342691) 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, 542520 + ... + 542621.

It is an arithmetic number, because the mean of its divisors is an integer number (9766278).

Almost surely, 2^55342191 is an apocalyptic number.

55342191 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55342191 is a deficient number, since it is larger than the sum of its proper divisors (22788033).

55342191 is a wasteful number, since it uses less digits than its factorization.

55342191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085161.

The product of its digits is 5400, while the sum is 30.

The square root of 55342191 is about 7439.2332266168. The cubic root of 55342191 is about 381.0823046059.

The spelling of 55342191 in words is "fifty-five million, three hundred forty-two thousand, one hundred ninety-one".