55054999991 has 8 divisors (see below), whose sum is σ = 56338626960. Its totient is φ = 53771522112.

The previous prime is 55054999981. The next prime is 55055000003. The reversal of 55054999991 is 19999945055.

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 55054999991 - 2²² = 55050805687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55054999981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1132595 + ... + 1180203.

It is an arithmetic number, because the mean of its divisors is an integer number (7042328370).

Almost surely, 2^55054999991 is an apocalyptic number.

55054999991 is a deficient number, since it is larger than the sum of its proper divisors (1283626969).

55054999991 is a wasteful number, since it uses less digits than its factorization.

55054999991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74545.

The product of its (nonzero) digits is 29524500, while the sum is 65.

The spelling of 55054999991 in words is "fifty-five billion, fifty-four million, nine hundred ninety-nine thousand, nine hundred ninety-one".