55917228945 has 8 divisors (see below), whose sum is σ = 89467566336. Its totient is φ = 29822522096.

The previous prime is 55917228943. The next prime is 55917228953. The reversal of 55917228945 is 54982271955.

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 55917228945 - 2¹ = 55917228943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55917228943) 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, 1863907617 + ... + 1863907646.

It is an arithmetic number, because the mean of its divisors is an integer number (11183445792).

Almost surely, 2^55917228945 is an apocalyptic number.

It is an amenable number.

55917228945 is a deficient number, since it is larger than the sum of its proper divisors (33550337391).

55917228945 is a wasteful number, since it uses less digits than its factorization.

55917228945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727815271.

The product of its digits is 9072000, while the sum is 57.

The spelling of 55917228945 in words is "fifty-five billion, nine hundred seventeen million, two hundred twenty-eight thousand, nine hundred forty-five".