55220276591 has 8 divisors (see below), whose sum is σ = 55468824000. Its totient is φ = 54971794080.

The previous prime is 55220276549. The next prime is 55220276609. The reversal of 55220276591 is 19567202255.

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 55220276591 - 2³⁴ = 38040407407 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 (55220276521) 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, 2696810 + ... + 2717208.

It is an arithmetic number, because the mean of its divisors is an integer number (6933603000).

Almost surely, 2^55220276591 is an apocalyptic number.

55220276591 is a deficient number, since it is larger than the sum of its proper divisors (248547409).

55220276591 is a wasteful number, since it uses less digits than its factorization.

55220276591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32449.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 55220276591 in words is "fifty-five billion, two hundred twenty million, two hundred seventy-six thousand, five hundred ninety-one".