55455045591 has 8 divisors (see below), whose sum is σ = 80661884544. Its totient is φ = 33609118520.

The previous prime is 55455045539. The next prime is 55455045599. The reversal of 55455045591 is 19554055455.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55455045591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55455045591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55455045599) 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, 840227931 + ... + 840227996.

It is an arithmetic number, because the mean of its divisors is an integer number (10082735568).

Almost surely, 2^55455045591 is an apocalyptic number.

55455045591 is a deficient number, since it is larger than the sum of its proper divisors (25206838953).

55455045591 is a wasteful number, since it uses less digits than its factorization.

55455045591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680455941.

The product of its (nonzero) digits is 2250000, while the sum is 48.

The spelling of 55455045591 in words is "fifty-five billion, four hundred fifty-five million, forty-five thousand, five hundred ninety-one".