55084389087 has 128 divisors (see below), whose sum is σ = 99707453440. Its totient is φ = 26235601920.

The previous prime is 55084389053. The next prime is 55084389103. The reversal of 55084389087 is 78098348055.

It is a happy number.

It is not a de Polignac number, because 55084389087 - 2¹⁰ = 55084388063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55084389037) 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 127 ways as a sum of consecutive naturals, for example, 10770843 + ... + 10775955.

It is an arithmetic number, because the mean of its divisors is an integer number (778964480).

Almost surely, 2^55084389087 is an apocalyptic number.

55084389087 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

55084389087 is a deficient number, since it is larger than the sum of its proper divisors (44623064353).

55084389087 is a wasteful number, since it uses less digits than its factorization.

55084389087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253.

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 55084389087 in words is "fifty-five billion, eighty-four million, three hundred eighty-nine thousand, eighty-seven".