55041191 has 2 divisors, whose sum is σ = 55041192. Its totient is φ = 55041190.

The previous prime is 55041187. The next prime is 55041193. The reversal of 55041191 is 19114055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55041191 - 2² = 55041187 is a prime.

Together with 55041193, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3284522 and since 55041191 and 3284522 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55041191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55041193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27520595 + 27520596.

It is an arithmetic number, because the mean of its divisors is an integer number (27520596).

Almost surely, 2^55041191 is an apocalyptic number.

55041191 is a deficient number, since it is larger than the sum of its proper divisors (1).

55041191 is an equidigital number, since it uses as much as digits as its factorization.

55041191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 55041191 is about 7418.9750639829. The cubic root of 55041191 is about 380.3901602126.

The spelling of 55041191 in words is "fifty-five million, forty-one thousand, one hundred ninety-one".