55085191 has 8 divisors (see below), whose sum is σ = 63713664. Its totient is φ = 46646520.

The previous prime is 55085159. The next prime is 55085197. The reversal of 55085191 is 19158055.

55085191 is nontrivially palindromic in base 4.

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 55085191 - 2⁵ = 55085159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55085197) 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, 46825 + ... + 47986.

It is an arithmetic number, because the mean of its divisors is an integer number (7964208).

Almost surely, 2^55085191 is an apocalyptic number.

55085191 is a deficient number, since it is larger than the sum of its proper divisors (8628473).

55085191 is an equidigital number, since it uses as much as digits as its factorization.

55085191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94901.

The product of its (nonzero) digits is 9000, while the sum is 34.

The square root of 55085191 is about 7421.9398407694. The cubic root of 55085191 is about 380.4914946788.

The spelling of 55085191 in words is "fifty-five million, eighty-five thousand, one hundred ninety-one".