55021750897 has 16 divisors (see below), whose sum is σ = 59183695872. Its totient is φ = 51028217680.

The previous prime is 55021750873. The next prime is 55021750957. The reversal of 55021750897 is 79805712055.

It is not a de Polignac number, because 55021750897 - 2¹¹ = 55021748849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55021750897.

It is not an unprimeable number, because it can be changed into a prime (55021760897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122179 + ... + 353512.

It is an arithmetic number, because the mean of its divisors is an integer number (3698980992).

Almost surely, 2^55021750897 is an apocalyptic number.

It is an amenable number.

55021750897 is a deficient number, since it is larger than the sum of its proper divisors (4161944975).

55021750897 is a wasteful number, since it uses less digits than its factorization.

55021750897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475868.

The product of its (nonzero) digits is 882000, while the sum is 49.

The spelling of 55021750897 in words is "fifty-five billion, twenty-one million, seven hundred fifty thousand, eight hundred ninety-seven".